Vulnerability-Lookup

CVE-2024-39301 (GCVE-0-2024-39301)

Vulnerability from cvelistv5 – Published: 2024-06-25 14:22 – Updated: 2026-05-11 20:20

Title

net/9p: fix uninit-value in p9_client_rpc()

Summary

In the Linux kernel, the following vulnerability has been resolved: net/9p: fix uninit-value in p9_client_rpc() Syzbot with the help of KMSAN reported the following error: BUG: KMSAN: uninit-value in trace_9p_client_res include/trace/events/9p.h:146 [inline] BUG: KMSAN: uninit-value in p9_client_rpc+0x1314/0x1340 net/9p/client.c:754 trace_9p_client_res include/trace/events/9p.h:146 [inline] p9_client_rpc+0x1314/0x1340 net/9p/client.c:754 p9_client_create+0x1551/0x1ff0 net/9p/client.c:1031 v9fs_session_init+0x1b9/0x28e0 fs/9p/v9fs.c:410 v9fs_mount+0xe2/0x12b0 fs/9p/vfs_super.c:122 legacy_get_tree+0x114/0x290 fs/fs_context.c:662 vfs_get_tree+0xa7/0x570 fs/super.c:1797 do_new_mount+0x71f/0x15e0 fs/namespace.c:3352 path_mount+0x742/0x1f20 fs/namespace.c:3679 do_mount fs/namespace.c:3692 [inline] __do_sys_mount fs/namespace.c:3898 [inline] __se_sys_mount+0x725/0x810 fs/namespace.c:3875 __x64_sys_mount+0xe4/0x150 fs/namespace.c:3875 do_syscall_64+0xd5/0x1f0 entry_SYSCALL_64_after_hwframe+0x6d/0x75 Uninit was created at: __alloc_pages+0x9d6/0xe70 mm/page_alloc.c:4598 __alloc_pages_node include/linux/gfp.h:238 [inline] alloc_pages_node include/linux/gfp.h:261 [inline] alloc_slab_page mm/slub.c:2175 [inline] allocate_slab mm/slub.c:2338 [inline] new_slab+0x2de/0x1400 mm/slub.c:2391 ___slab_alloc+0x1184/0x33d0 mm/slub.c:3525 __slab_alloc mm/slub.c:3610 [inline] __slab_alloc_node mm/slub.c:3663 [inline] slab_alloc_node mm/slub.c:3835 [inline] kmem_cache_alloc+0x6d3/0xbe0 mm/slub.c:3852 p9_tag_alloc net/9p/client.c:278 [inline] p9_client_prepare_req+0x20a/0x1770 net/9p/client.c:641 p9_client_rpc+0x27e/0x1340 net/9p/client.c:688 p9_client_create+0x1551/0x1ff0 net/9p/client.c:1031 v9fs_session_init+0x1b9/0x28e0 fs/9p/v9fs.c:410 v9fs_mount+0xe2/0x12b0 fs/9p/vfs_super.c:122 legacy_get_tree+0x114/0x290 fs/fs_context.c:662 vfs_get_tree+0xa7/0x570 fs/super.c:1797 do_new_mount+0x71f/0x15e0 fs/namespace.c:3352 path_mount+0x742/0x1f20 fs/namespace.c:3679 do_mount fs/namespace.c:3692 [inline] __do_sys_mount fs/namespace.c:3898 [inline] __se_sys_mount+0x725/0x810 fs/namespace.c:3875 __x64_sys_mount+0xe4/0x150 fs/namespace.c:3875 do_syscall_64+0xd5/0x1f0 entry_SYSCALL_64_after_hwframe+0x6d/0x75 If p9_check_errors() fails early in p9_client_rpc(), req->rc.tag will not be properly initialized. However, trace_9p_client_res() ends up trying to print it out anyway before p9_client_rpc() finishes. Fix this issue by assigning default values to p9_fcall fields such as 'tag' and (just in case KMSAN unearths something new) 'id' during the tag allocation stage.

Severity

No CVSS data available.

SSVC

Exploitation: none Automatable: no Technical Impact: partial

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2024-06-25 15:42 UTC

Assigner

Linux mitre root

References

8 references

URL	Tags
https://git.kernel.org/stable/c/72c5d8e416ecc46af…
https://git.kernel.org/stable/c/2101901dd58c6da49…
https://git.kernel.org/stable/c/12494785556457271…
https://git.kernel.org/stable/c/89969ffbeb948ffc1…
https://git.kernel.org/stable/c/ca71f204711ad2411…
https://git.kernel.org/stable/c/6c1791130b781c843…
https://git.kernel.org/stable/c/fe5c604053c36c62a…
https://git.kernel.org/stable/c/25460d6f39024cc3b…

Impacted products

2 products

Vendor	Product	Version	CPE status
Linux	Linux	Affected: 348b59012e5c6402741d067cf6eeeb6271999d06 , < 72c5d8e416ecc46af370a1340b3db5ff0b0cc867 (git) Affected: 348b59012e5c6402741d067cf6eeeb6271999d06 , < 2101901dd58c6da4924bc5efb217a1d83436290b (git) Affected: 348b59012e5c6402741d067cf6eeeb6271999d06 , < 124947855564572713d705a13be7d0c9dae16a17 (git) Affected: 348b59012e5c6402741d067cf6eeeb6271999d06 , < 89969ffbeb948ffc159d19252e7469490103011b (git) Affected: 348b59012e5c6402741d067cf6eeeb6271999d06 , < ca71f204711ad24113e8b344dc5bb8b0385f5672 (git) Affected: 348b59012e5c6402741d067cf6eeeb6271999d06 , < 6c1791130b781c843572fb6391c4a4c5d857ab17 (git) Affected: 348b59012e5c6402741d067cf6eeeb6271999d06 , < fe5c604053c36c62af24eee8a76407d026ea5163 (git) Affected: 348b59012e5c6402741d067cf6eeeb6271999d06 , < 25460d6f39024cc3b8241b14c7ccf0d6f11a736a (git)	guessed
Linux	Linux	Affected: 3.2 Unaffected: 0 , < 3.2 (semver) Unaffected: 4.19.316 , ≤ 4.19.* (semver) Unaffected: 5.4.278 , ≤ 5.4.* (semver) Unaffected: 5.10.219 , ≤ 5.10.* (semver) Unaffected: 5.15.161 , ≤ 5.15.* (semver) Unaffected: 6.1.94 , ≤ 6.1.* (semver) Unaffected: 6.6.34 , ≤ 6.6.* (semver) Unaffected: 6.9.5 , ≤ 6.9.* (semver) Unaffected: 6.10 , ≤ * (original_commit_for_fix)	guessed

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      "configurations": "[{\"nodes\": [{\"operator\": \"OR\", \"negate\": false, \"cpeMatch\": [{\"vulnerable\": true, \"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"versionStartIncluding\": \"3.2\", \"versionEndExcluding\": \"4.19.316\", \"matchCriteriaId\": \"CCF5D1C7-721B-4F6D-A174-0C49C221A367\"}, {\"vulnerable\": true, \"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"versionStartIncluding\": \"4.20\", \"versionEndExcluding\": \"5.4.278\", \"matchCriteriaId\": \"7FDBF235-DA18-49A1-8690-6C7272FD0701\"}, {\"vulnerable\": true, \"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"versionStartIncluding\": \"5.5\", \"versionEndExcluding\": \"5.10.219\", \"matchCriteriaId\": \"E9063AF3-D593-43B7-810D-58B87F82F9F9\"}, {\"vulnerable\": true, \"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"versionStartIncluding\": \"5.11\", \"versionEndExcluding\": \"5.15.161\", \"matchCriteriaId\": \"31130639-53FE-4726-8986-434EE2528CB2\"}, {\"vulnerable\": true, \"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"versionStartIncluding\": \"5.16\", \"versionEndExcluding\": \"6.1.94\", \"matchCriteriaId\": \"9D20DE32-76F8-4E4C-A8DF-5B53082D18E5\"}, {\"vulnerable\": true, \"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"versionStartIncluding\": \"6.2\", \"versionEndExcluding\": \"6.6.34\", \"matchCriteriaId\": \"6BD9DCFD-0342-4039-B8CE-70F26DB7173B\"}, {\"vulnerable\": true, \"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"versionStartIncluding\": \"6.7\", \"versionEndExcluding\": \"6.9.5\", \"matchCriteriaId\": \"8366481F-770F-4850-9D0F-2977BD97D5C5\"}, {\"vulnerable\": true, \"criteria\": \"cpe:2.3:o:linux:linux_kernel:6.10:rc1:*:*:*:*:*:*\", \"matchCriteriaId\": \"2EBB4392-5FA6-4DA9-9772-8F9C750109FA\"}]}]}]",
      "descriptions": "[{\"lang\": \"en\", \"value\": \"In the Linux kernel, the following vulnerability has been resolved:\\n\\nnet/9p: fix uninit-value in p9_client_rpc()\\n\\nSyzbot with the help of KMSAN reported the following error:\\n\\nBUG: KMSAN: uninit-value in trace_9p_client_res include/trace/events/9p.h:146 [inline]\\nBUG: KMSAN: uninit-value in p9_client_rpc+0x1314/0x1340 net/9p/client.c:754\\n trace_9p_client_res include/trace/events/9p.h:146 [inline]\\n p9_client_rpc+0x1314/0x1340 net/9p/client.c:754\\n p9_client_create+0x1551/0x1ff0 net/9p/client.c:1031\\n v9fs_session_init+0x1b9/0x28e0 fs/9p/v9fs.c:410\\n v9fs_mount+0xe2/0x12b0 fs/9p/vfs_super.c:122\\n legacy_get_tree+0x114/0x290 fs/fs_context.c:662\\n vfs_get_tree+0xa7/0x570 fs/super.c:1797\\n do_new_mount+0x71f/0x15e0 fs/namespace.c:3352\\n path_mount+0x742/0x1f20 fs/namespace.c:3679\\n do_mount fs/namespace.c:3692 [inline]\\n __do_sys_mount fs/namespace.c:3898 [inline]\\n __se_sys_mount+0x725/0x810 fs/namespace.c:3875\\n __x64_sys_mount+0xe4/0x150 fs/namespace.c:3875\\n do_syscall_64+0xd5/0x1f0\\n entry_SYSCALL_64_after_hwframe+0x6d/0x75\\n\\nUninit was created at:\\n __alloc_pages+0x9d6/0xe70 mm/page_alloc.c:4598\\n __alloc_pages_node include/linux/gfp.h:238 [inline]\\n alloc_pages_node include/linux/gfp.h:261 [inline]\\n alloc_slab_page mm/slub.c:2175 [inline]\\n allocate_slab mm/slub.c:2338 [inline]\\n new_slab+0x2de/0x1400 mm/slub.c:2391\\n ___slab_alloc+0x1184/0x33d0 mm/slub.c:3525\\n __slab_alloc mm/slub.c:3610 [inline]\\n __slab_alloc_node mm/slub.c:3663 [inline]\\n slab_alloc_node mm/slub.c:3835 [inline]\\n kmem_cache_alloc+0x6d3/0xbe0 mm/slub.c:3852\\n p9_tag_alloc net/9p/client.c:278 [inline]\\n p9_client_prepare_req+0x20a/0x1770 net/9p/client.c:641\\n p9_client_rpc+0x27e/0x1340 net/9p/client.c:688\\n p9_client_create+0x1551/0x1ff0 net/9p/client.c:1031\\n v9fs_session_init+0x1b9/0x28e0 fs/9p/v9fs.c:410\\n v9fs_mount+0xe2/0x12b0 fs/9p/vfs_super.c:122\\n legacy_get_tree+0x114/0x290 fs/fs_context.c:662\\n vfs_get_tree+0xa7/0x570 fs/super.c:1797\\n do_new_mount+0x71f/0x15e0 fs/namespace.c:3352\\n path_mount+0x742/0x1f20 fs/namespace.c:3679\\n do_mount fs/namespace.c:3692 [inline]\\n __do_sys_mount fs/namespace.c:3898 [inline]\\n __se_sys_mount+0x725/0x810 fs/namespace.c:3875\\n __x64_sys_mount+0xe4/0x150 fs/namespace.c:3875\\n do_syscall_64+0xd5/0x1f0\\n entry_SYSCALL_64_after_hwframe+0x6d/0x75\\n\\nIf p9_check_errors() fails early in p9_client_rpc(), req-\u003erc.tag\\nwill not be properly initialized. However, trace_9p_client_res()\\nends up trying to print it out anyway before p9_client_rpc()\\nfinishes.\\n\\nFix this issue by assigning default values to p9_fcall fields\\nsuch as \u0027tag\u0027 and (just in case KMSAN unearths something new) \u0027id\u0027\\nduring the tag allocation stage.\"}, {\"lang\": \"es\", \"value\": \"En el kernel de Linux, se resolvi\\u00f3 la siguiente vulnerabilidad: net/9p: corrige el valor uninit en p9_client_rpc() Syzbot con la ayuda de KMSAN inform\\u00f3 el siguiente error: ERROR: KMSAN: valor uninit en trace_9p_client_res include/trace/events/ 9p.h:146 [en l\\u00ednea] ERROR: KMSAN: valor uninit en p9_client_rpc+0x1314/0x1340 net/9p/client.c:754 trace_9p_client_res include/trace/events/9p.h:146 [en l\\u00ednea] p9_client_rpc+0x1314/0x1340 net/9p/client.c:754 p9_client_create+0x1551/0x1ff0 net/9p/client.c:1031 v9fs_session_init+0x1b9/0x28e0 fs/9p/v9fs.c:410 v9fs_mount+0xe2/0x12b0 fs/9p/vfs_super.c: 122 Legacy_get_tree+0x114/0x290 fs/fs_context.c:662 vfs_get_tree+0xa7/0x570 fs/super.c:1797 do_new_mount+0x71f/0x15e0 fs/namespace.c:3352 path_mount+0x742/0x1f20 fs/namespace.c:3679 montar fs/namespace.c:3692 [en l\\u00ednea] __do_sys_mount fs/namespace.c:3898 [en l\\u00ednea] __se_sys_mount+0x725/0x810 fs/namespace.c:3875 __x64_sys_mount+0xe4/0x150 fs/namespace.c:3875 do_syscall_64+0xd5/ 0x1f0 Entry_SYSCALL_64_after_hwframe+0x6d/0x75 Uninit se cre\\u00f3 en: __alloc_pages+0x9d6/0xe70 mm/page_alloc.c:4598 __alloc_pages_node include/linux/gfp.h:238 [en l\\u00ednea] alloc_pages_node include/linux/gfp.h:261 [en l\\u00ednea] p\\u00e1gina mm /slub.c:2175 [en l\\u00ednea] allocate_slab mm/slub.c:2338 [en l\\u00ednea] new_slab+0x2de/0x1400 mm/slub.c:2391 ___slab_alloc+0x1184/0x33d0 mm/slub.c:3525 __slab_alloc mm/slub.c :3610 [en l\\u00ednea] __slab_alloc_node mm/slub.c:3663 [en l\\u00ednea] slab_alloc_node mm/slub.c:3835 [en l\\u00ednea] kmem_cache_alloc+0x6d3/0xbe0 mm/slub.c:3852 p9_tag_alloc net/9p/client.c:278 [ en l\\u00ednea] p9_client_prepare_req+0x20a/0x1770 net/9p/client.c:641 p9_client_rpc+0x27e/0x1340 net/9p/client.c:688 p9_client_create+0x1551/0x1ff0 net/9p/client.c:1031 1b9/0x28e0fs /9p/v9fs.c:410 v9fs_mount+0xe2/0x12b0 fs/9p/vfs_super.c:122 Legacy_get_tree+0x114/0x290 fs/fs_context.c:662 vfs_get_tree+0xa7/0x570 fs/super.c:1797 do_new_mount+0x71f/ 0x15e0 fs/namespace.c:3352 path_mount+0x742/0x1f20 fs/namespace.c:3679 do_mount fs/namespace.c:3692 [en l\\u00ednea] __do_sys_mount fs/namespace.c:3898 [en l\\u00ednea] __se_sys_mount+0x725/0x810 fs/namespace .c: 3875 __x64_sys_mount+0xe4/0x150 fs/namespace.c: 3875 do_syscall_64+0xd5/0x1f0 entry_syscall_64_after_hwframe+0x6d/0x75 if p9_check_errors () fails en p9_client no se inicialice correctamente. Sin embargo, trace_9p_client_res() termina intentando imprimirlo de todos modos antes de que finalice p9_client_rpc(). Solucione este problema asignando valores predeterminados a los campos p9_fcall como \u0027etiqueta\u0027 y (en caso de que KMSAN descubra algo nuevo) \u0027id\u0027 durante la etapa de asignaci\\u00f3n de etiquetas.\"}]",
      "id": "CVE-2024-39301",
      "lastModified": "2024-11-21T09:27:25.003",
      "metrics": "{\"cvssMetricV31\": [{\"source\": \"nvd@nist.gov\", \"type\": \"Primary\", \"cvssData\": {\"version\": \"3.1\", \"vectorString\": \"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H\", \"baseScore\": 5.5, \"baseSeverity\": \"MEDIUM\", \"attackVector\": \"LOCAL\", \"attackComplexity\": \"LOW\", \"privilegesRequired\": \"LOW\", \"userInteraction\": \"NONE\", \"scope\": \"UNCHANGED\", \"confidentialityImpact\": \"NONE\", \"integrityImpact\": \"NONE\", \"availabilityImpact\": \"HIGH\"}, \"exploitabilityScore\": 1.8, \"impactScore\": 3.6}]}",
      "published": "2024-06-25T15:15:14.240",
      "references": "[{\"url\": \"https://git.kernel.org/stable/c/124947855564572713d705a13be7d0c9dae16a17\", \"source\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\", \"tags\": [\"Patch\"]}, {\"url\": \"https://git.kernel.org/stable/c/2101901dd58c6da4924bc5efb217a1d83436290b\", \"source\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\", \"tags\": [\"Patch\"]}, {\"url\": \"https://git.kernel.org/stable/c/25460d6f39024cc3b8241b14c7ccf0d6f11a736a\", \"source\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\", \"tags\": [\"Patch\"]}, {\"url\": \"https://git.kernel.org/stable/c/6c1791130b781c843572fb6391c4a4c5d857ab17\", \"source\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\", \"tags\": [\"Patch\"]}, {\"url\": \"https://git.kernel.org/stable/c/72c5d8e416ecc46af370a1340b3db5ff0b0cc867\", \"source\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\", \"tags\": [\"Patch\"]}, {\"url\": \"https://git.kernel.org/stable/c/89969ffbeb948ffc159d19252e7469490103011b\", \"source\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\", \"tags\": [\"Patch\"]}, {\"url\": \"https://git.kernel.org/stable/c/ca71f204711ad24113e8b344dc5bb8b0385f5672\", \"source\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\", \"tags\": [\"Patch\"]}, {\"url\": \"https://git.kernel.org/stable/c/fe5c604053c36c62af24eee8a76407d026ea5163\", \"source\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\", \"tags\": [\"Patch\"]}, {\"url\": \"https://git.kernel.org/stable/c/124947855564572713d705a13be7d0c9dae16a17\", \"source\": \"af854a3a-2127-422b-91ae-364da2661108\", \"tags\": [\"Patch\"]}, {\"url\": \"https://git.kernel.org/stable/c/2101901dd58c6da4924bc5efb217a1d83436290b\", \"source\": \"af854a3a-2127-422b-91ae-364da2661108\", \"tags\": [\"Patch\"]}, {\"url\": \"https://git.kernel.org/stable/c/25460d6f39024cc3b8241b14c7ccf0d6f11a736a\", \"source\": \"af854a3a-2127-422b-91ae-364da2661108\", \"tags\": [\"Patch\"]}, {\"url\": \"https://git.kernel.org/stable/c/6c1791130b781c843572fb6391c4a4c5d857ab17\", \"source\": \"af854a3a-2127-422b-91ae-364da2661108\", \"tags\": [\"Patch\"]}, {\"url\": \"https://git.kernel.org/stable/c/72c5d8e416ecc46af370a1340b3db5ff0b0cc867\", \"source\": \"af854a3a-2127-422b-91ae-364da2661108\", \"tags\": [\"Patch\"]}, {\"url\": \"https://git.kernel.org/stable/c/89969ffbeb948ffc159d19252e7469490103011b\", \"source\": \"af854a3a-2127-422b-91ae-364da2661108\", \"tags\": [\"Patch\"]}, {\"url\": \"https://git.kernel.org/stable/c/ca71f204711ad24113e8b344dc5bb8b0385f5672\", \"source\": \"af854a3a-2127-422b-91ae-364da2661108\", \"tags\": [\"Patch\"]}, {\"url\": \"https://git.kernel.org/stable/c/fe5c604053c36c62af24eee8a76407d026ea5163\", \"source\": \"af854a3a-2127-422b-91ae-364da2661108\", \"tags\": [\"Patch\"]}]",
      "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "vulnStatus": "Modified",
      "weaknesses": "[{\"source\": \"nvd@nist.gov\", \"type\": \"Primary\", \"description\": [{\"lang\": \"en\", \"value\": \"CWE-665\"}]}]"
    },
    "nvd": "{\"cve\":{\"id\":\"CVE-2024-39301\",\"sourceIdentifier\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"published\":\"2024-06-25T15:15:14.240\",\"lastModified\":\"2026-06-17T07:41:40.387\",\"vulnStatus\":\"Modified\",\"cveTags\":[],\"descriptions\":[{\"lang\":\"en\",\"value\":\"In the Linux kernel, the following vulnerability has been resolved:\\n\\nnet/9p: fix uninit-value in p9_client_rpc()\\n\\nSyzbot with the help of KMSAN reported the following error:\\n\\nBUG: KMSAN: uninit-value in trace_9p_client_res include/trace/events/9p.h:146 [inline]\\nBUG: KMSAN: uninit-value in p9_client_rpc+0x1314/0x1340 net/9p/client.c:754\\n trace_9p_client_res include/trace/events/9p.h:146 [inline]\\n p9_client_rpc+0x1314/0x1340 net/9p/client.c:754\\n p9_client_create+0x1551/0x1ff0 net/9p/client.c:1031\\n v9fs_session_init+0x1b9/0x28e0 fs/9p/v9fs.c:410\\n v9fs_mount+0xe2/0x12b0 fs/9p/vfs_super.c:122\\n legacy_get_tree+0x114/0x290 fs/fs_context.c:662\\n vfs_get_tree+0xa7/0x570 fs/super.c:1797\\n do_new_mount+0x71f/0x15e0 fs/namespace.c:3352\\n path_mount+0x742/0x1f20 fs/namespace.c:3679\\n do_mount fs/namespace.c:3692 [inline]\\n __do_sys_mount fs/namespace.c:3898 [inline]\\n __se_sys_mount+0x725/0x810 fs/namespace.c:3875\\n __x64_sys_mount+0xe4/0x150 fs/namespace.c:3875\\n do_syscall_64+0xd5/0x1f0\\n entry_SYSCALL_64_after_hwframe+0x6d/0x75\\n\\nUninit was created at:\\n __alloc_pages+0x9d6/0xe70 mm/page_alloc.c:4598\\n __alloc_pages_node include/linux/gfp.h:238 [inline]\\n alloc_pages_node include/linux/gfp.h:261 [inline]\\n alloc_slab_page mm/slub.c:2175 [inline]\\n allocate_slab mm/slub.c:2338 [inline]\\n new_slab+0x2de/0x1400 mm/slub.c:2391\\n ___slab_alloc+0x1184/0x33d0 mm/slub.c:3525\\n __slab_alloc mm/slub.c:3610 [inline]\\n __slab_alloc_node mm/slub.c:3663 [inline]\\n slab_alloc_node mm/slub.c:3835 [inline]\\n kmem_cache_alloc+0x6d3/0xbe0 mm/slub.c:3852\\n p9_tag_alloc net/9p/client.c:278 [inline]\\n p9_client_prepare_req+0x20a/0x1770 net/9p/client.c:641\\n p9_client_rpc+0x27e/0x1340 net/9p/client.c:688\\n p9_client_create+0x1551/0x1ff0 net/9p/client.c:1031\\n v9fs_session_init+0x1b9/0x28e0 fs/9p/v9fs.c:410\\n v9fs_mount+0xe2/0x12b0 fs/9p/vfs_super.c:122\\n legacy_get_tree+0x114/0x290 fs/fs_context.c:662\\n vfs_get_tree+0xa7/0x570 fs/super.c:1797\\n do_new_mount+0x71f/0x15e0 fs/namespace.c:3352\\n path_mount+0x742/0x1f20 fs/namespace.c:3679\\n do_mount fs/namespace.c:3692 [inline]\\n __do_sys_mount fs/namespace.c:3898 [inline]\\n __se_sys_mount+0x725/0x810 fs/namespace.c:3875\\n __x64_sys_mount+0xe4/0x150 fs/namespace.c:3875\\n do_syscall_64+0xd5/0x1f0\\n entry_SYSCALL_64_after_hwframe+0x6d/0x75\\n\\nIf p9_check_errors() fails early in p9_client_rpc(), req-\u003erc.tag\\nwill not be properly initialized. However, trace_9p_client_res()\\nends up trying to print it out anyway before p9_client_rpc()\\nfinishes.\\n\\nFix this issue by assigning default values to p9_fcall fields\\nsuch as \u0027tag\u0027 and (just in case KMSAN unearths something new) \u0027id\u0027\\nduring the tag allocation stage.\"},{\"lang\":\"es\",\"value\":\"En el kernel de Linux, se resolvi\u00f3 la siguiente vulnerabilidad: net/9p: corrige el valor uninit en p9_client_rpc() Syzbot con la ayuda de KMSAN inform\u00f3 el siguiente error: ERROR: KMSAN: valor uninit en trace_9p_client_res include/trace/events/ 9p.h:146 [en l\u00ednea] ERROR: KMSAN: valor uninit en p9_client_rpc+0x1314/0x1340 net/9p/client.c:754 trace_9p_client_res include/trace/events/9p.h:146 [en l\u00ednea] p9_client_rpc+0x1314/0x1340 net/9p/client.c:754 p9_client_create+0x1551/0x1ff0 net/9p/client.c:1031 v9fs_session_init+0x1b9/0x28e0 fs/9p/v9fs.c:410 v9fs_mount+0xe2/0x12b0 fs/9p/vfs_super.c: 122 Legacy_get_tree+0x114/0x290 fs/fs_context.c:662 vfs_get_tree+0xa7/0x570 fs/super.c:1797 do_new_mount+0x71f/0x15e0 fs/namespace.c:3352 path_mount+0x742/0x1f20 fs/namespace.c:3679 montar fs/namespace.c:3692 [en l\u00ednea] __do_sys_mount fs/namespace.c:3898 [en l\u00ednea] __se_sys_mount+0x725/0x810 fs/namespace.c:3875 __x64_sys_mount+0xe4/0x150 fs/namespace.c:3875 do_syscall_64+0xd5/ 0x1f0 Entry_SYSCALL_64_after_hwframe+0x6d/0x75 Uninit se cre\u00f3 en: __alloc_pages+0x9d6/0xe70 mm/page_alloc.c:4598 __alloc_pages_node include/linux/gfp.h:238 [en l\u00ednea] alloc_pages_node include/linux/gfp.h:261 [en l\u00ednea] p\u00e1gina mm /slub.c:2175 [en l\u00ednea] allocate_slab mm/slub.c:2338 [en l\u00ednea] new_slab+0x2de/0x1400 mm/slub.c:2391 ___slab_alloc+0x1184/0x33d0 mm/slub.c:3525 __slab_alloc mm/slub.c :3610 [en l\u00ednea] __slab_alloc_node mm/slub.c:3663 [en l\u00ednea] slab_alloc_node mm/slub.c:3835 [en l\u00ednea] kmem_cache_alloc+0x6d3/0xbe0 mm/slub.c:3852 p9_tag_alloc net/9p/client.c:278 [ en l\u00ednea] p9_client_prepare_req+0x20a/0x1770 net/9p/client.c:641 p9_client_rpc+0x27e/0x1340 net/9p/client.c:688 p9_client_create+0x1551/0x1ff0 net/9p/client.c:1031 1b9/0x28e0fs /9p/v9fs.c:410 v9fs_mount+0xe2/0x12b0 fs/9p/vfs_super.c:122 Legacy_get_tree+0x114/0x290 fs/fs_context.c:662 vfs_get_tree+0xa7/0x570 fs/super.c:1797 do_new_mount+0x71f/ 0x15e0 fs/namespace.c:3352 path_mount+0x742/0x1f20 fs/namespace.c:3679 do_mount fs/namespace.c:3692 [en l\u00ednea] __do_sys_mount fs/namespace.c:3898 [en l\u00ednea] __se_sys_mount+0x725/0x810 fs/namespace .c: 3875 __x64_sys_mount+0xe4/0x150 fs/namespace.c: 3875 do_syscall_64+0xd5/0x1f0 entry_syscall_64_after_hwframe+0x6d/0x75 if p9_check_errors () fails en p9_client no se inicialice correctamente. Sin embargo, trace_9p_client_res() termina intentando imprimirlo de todos modos antes de que finalice p9_client_rpc(). Solucione este problema asignando valores predeterminados a los campos p9_fcall como \u0027etiqueta\u0027 y (en caso de que KMSAN descubra algo nuevo) \u0027id\u0027 durante la etapa de asignaci\u00f3n de etiquetas.\"}],\"affected\":[{\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"affectedData\":[{\"vendor\":\"Linux\",\"product\":\"Linux\",\"defaultStatus\":\"unaffected\",\"programFiles\":[\"net/9p/client.c\"],\"repo\":\"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\",\"versions\":[{\"version\":\"348b59012e5c6402741d067cf6eeeb6271999d06\",\"lessThan\":\"72c5d8e416ecc46af370a1340b3db5ff0b0cc867\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"348b59012e5c6402741d067cf6eeeb6271999d06\",\"lessThan\":\"2101901dd58c6da4924bc5efb217a1d83436290b\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"348b59012e5c6402741d067cf6eeeb6271999d06\",\"lessThan\":\"124947855564572713d705a13be7d0c9dae16a17\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"348b59012e5c6402741d067cf6eeeb6271999d06\",\"lessThan\":\"89969ffbeb948ffc159d19252e7469490103011b\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"348b59012e5c6402741d067cf6eeeb6271999d06\",\"lessThan\":\"ca71f204711ad24113e8b344dc5bb8b0385f5672\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"348b59012e5c6402741d067cf6eeeb6271999d06\",\"lessThan\":\"6c1791130b781c843572fb6391c4a4c5d857ab17\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"348b59012e5c6402741d067cf6eeeb6271999d06\",\"lessThan\":\"fe5c604053c36c62af24eee8a76407d026ea5163\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"348b59012e5c6402741d067cf6eeeb6271999d06\",\"lessThan\":\"25460d6f39024cc3b8241b14c7ccf0d6f11a736a\",\"versionType\":\"git\",\"status\":\"affected\"}]},{\"vendor\":\"Linux\",\"product\":\"Linux\",\"defaultStatus\":\"affected\",\"programFiles\":[\"net/9p/client.c\"],\"repo\":\"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\",\"versions\":[{\"version\":\"3.2\",\"status\":\"affected\"},{\"version\":\"0\",\"lessThan\":\"3.2\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"4.19.316\",\"lessThanOrEqual\":\"4.19.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"5.4.278\",\"lessThanOrEqual\":\"5.4.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"5.10.219\",\"lessThanOrEqual\":\"5.10.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"5.15.161\",\"lessThanOrEqual\":\"5.15.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"6.1.94\",\"lessThanOrEqual\":\"6.1.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"6.6.34\",\"lessThanOrEqual\":\"6.6.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"6.9.5\",\"lessThanOrEqual\":\"6.9.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"6.10\",\"lessThanOrEqual\":\"*\",\"versionType\":\"original_commit_for_fix\",\"status\":\"unaffected\"}]}]}],\"metrics\":{\"cvssMetricV31\":[{\"source\":\"nvd@nist.gov\",\"type\":\"Primary\",\"cvssData\":{\"version\":\"3.1\",\"vectorString\":\"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H\",\"baseScore\":5.5,\"baseSeverity\":\"MEDIUM\",\"attackVector\":\"LOCAL\",\"attackComplexity\":\"LOW\",\"privilegesRequired\":\"LOW\",\"userInteraction\":\"NONE\",\"scope\":\"UNCHANGED\",\"confidentialityImpact\":\"NONE\",\"integrityImpact\":\"NONE\",\"availabilityImpact\":\"HIGH\"},\"exploitabilityScore\":1.8,\"impactScore\":3.6}],\"ssvcV203\":[{\"source\":\"134c704f-9b21-4f2e-91b3-4a467353bcc0\",\"ssvcData\":{\"timestamp\":\"2024-06-25T15:42:59.168505Z\",\"id\":\"CVE-2024-39301\",\"options\":[{\"exploitation\":\"none\"},{\"automatable\":\"no\"},{\"technicalImpact\":\"partial\"}],\"role\":\"CISA 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    "redhat_vex": {
      "aggregate_severity": "Low",
      "current_release_date": "2025-11-21T14:39:24+00:00",
      "cve": "CVE-2024-39301",
      "id": "CVE-2024-39301",
      "initial_release_date": "2024-06-25T00:00:00+00:00",
      "product_status:known_affected": "14",
      "product_status:known_not_affected": "184",
      "source": "Red Hat CSAF VEX",
      "status": "final",
      "title": "kernel: net/9p: fix uninit-value in p9_client_rpc()",
      "url": "https://security.access.redhat.com/data/csaf/v2/vex/2024/cve-2024-39301.json",
      "version": "3"
    },
    "suse_vex": {
      "aggregate_severity": "moderate",
      "current_release_date": "2026-08-30T02:32:50Z",
      "cve": "CVE-2024-39301",
      "id": "CVE-2024-39301",
      "initial_release_date": "2024-06-26T23:17:33Z",
      "product_status:known_affected": "506",
      "product_status:known_not_affected": "38",
      "product_status:recommended": "735",
      "source": "SUSE CSAF VEX",
      "status": "interim",
      "title": "SUSE CVE CVE-2024-39301",
      "url": "https://ftp.suse.com/pub/projects/security/csaf-vex/cve-2024-39301.json",
      "version": "95"
    },
    "vulnrichment": {
      "containers": "{\"adp\": [{\"title\": \"CVE Program Container\", \"references\": [{\"url\": \"https://git.kernel.org/stable/c/72c5d8e416ecc46af370a1340b3db5ff0b0cc867\", \"tags\": [\"x_transferred\"]}, {\"url\": \"https://git.kernel.org/stable/c/2101901dd58c6da4924bc5efb217a1d83436290b\", \"tags\": [\"x_transferred\"]}, {\"url\": \"https://git.kernel.org/stable/c/124947855564572713d705a13be7d0c9dae16a17\", \"tags\": [\"x_transferred\"]}, {\"url\": \"https://git.kernel.org/stable/c/89969ffbeb948ffc159d19252e7469490103011b\", \"tags\": [\"x_transferred\"]}, {\"url\": \"https://git.kernel.org/stable/c/ca71f204711ad24113e8b344dc5bb8b0385f5672\", \"tags\": [\"x_transferred\"]}, {\"url\": \"https://git.kernel.org/stable/c/6c1791130b781c843572fb6391c4a4c5d857ab17\", \"tags\": [\"x_transferred\"]}, {\"url\": \"https://git.kernel.org/stable/c/fe5c604053c36c62af24eee8a76407d026ea5163\", \"tags\": [\"x_transferred\"]}, {\"url\": 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trace_9p_client_res include/trace/events/9p.h:146 [inline]\\n p9_client_rpc+0x1314/0x1340 net/9p/client.c:754\\n p9_client_create+0x1551/0x1ff0 net/9p/client.c:1031\\n v9fs_session_init+0x1b9/0x28e0 fs/9p/v9fs.c:410\\n v9fs_mount+0xe2/0x12b0 fs/9p/vfs_super.c:122\\n legacy_get_tree+0x114/0x290 fs/fs_context.c:662\\n vfs_get_tree+0xa7/0x570 fs/super.c:1797\\n do_new_mount+0x71f/0x15e0 fs/namespace.c:3352\\n path_mount+0x742/0x1f20 fs/namespace.c:3679\\n do_mount fs/namespace.c:3692 [inline]\\n __do_sys_mount fs/namespace.c:3898 [inline]\\n __se_sys_mount+0x725/0x810 fs/namespace.c:3875\\n __x64_sys_mount+0xe4/0x150 fs/namespace.c:3875\\n do_syscall_64+0xd5/0x1f0\\n entry_SYSCALL_64_after_hwframe+0x6d/0x75\\n\\nUninit was created at:\\n __alloc_pages+0x9d6/0xe70 mm/page_alloc.c:4598\\n __alloc_pages_node include/linux/gfp.h:238 [inline]\\n alloc_pages_node include/linux/gfp.h:261 [inline]\\n alloc_slab_page mm/slub.c:2175 [inline]\\n allocate_slab mm/slub.c:2338 [inline]\\n new_slab+0x2de/0x1400 mm/slub.c:2391\\n ___slab_alloc+0x1184/0x33d0 mm/slub.c:3525\\n __slab_alloc mm/slub.c:3610 [inline]\\n __slab_alloc_node mm/slub.c:3663 [inline]\\n slab_alloc_node mm/slub.c:3835 [inline]\\n kmem_cache_alloc+0x6d3/0xbe0 mm/slub.c:3852\\n p9_tag_alloc net/9p/client.c:278 [inline]\\n p9_client_prepare_req+0x20a/0x1770 net/9p/client.c:641\\n p9_client_rpc+0x27e/0x1340 net/9p/client.c:688\\n p9_client_create+0x1551/0x1ff0 net/9p/client.c:1031\\n v9fs_session_init+0x1b9/0x28e0 fs/9p/v9fs.c:410\\n v9fs_mount+0xe2/0x12b0 fs/9p/vfs_super.c:122\\n legacy_get_tree+0x114/0x290 fs/fs_context.c:662\\n vfs_get_tree+0xa7/0x570 fs/super.c:1797\\n do_new_mount+0x71f/0x15e0 fs/namespace.c:3352\\n path_mount+0x742/0x1f20 fs/namespace.c:3679\\n do_mount fs/namespace.c:3692 [inline]\\n __do_sys_mount fs/namespace.c:3898 [inline]\\n __se_sys_mount+0x725/0x810 fs/namespace.c:3875\\n __x64_sys_mount+0xe4/0x150 fs/namespace.c:3875\\n do_syscall_64+0xd5/0x1f0\\n entry_SYSCALL_64_after_hwframe+0x6d/0x75\\n\\nIf p9_check_errors() fails early in p9_client_rpc(), req-\u003erc.tag\\nwill not be properly initialized. However, trace_9p_client_res()\\nends up trying to print it out anyway before p9_client_rpc()\\nfinishes.\\n\\nFix this issue by assigning default values to p9_fcall fields\\nsuch as \u0027tag\u0027 and (just in case KMSAN unearths something new) \u0027id\u0027\\nduring the tag allocation stage.\"}], \"providerMetadata\": {\"orgId\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\", \"shortName\": \"Linux\", \"dateUpdated\": \"2024-12-19T09:06:33.888Z\"}}}",
      "cveMetadata": "{\"cveId\": \"CVE-2024-39301\", \"state\": \"PUBLISHED\", \"dateUpdated\": \"2024-12-19T09:06:33.888Z\", \"dateReserved\": \"2024-06-24T13:53:25.535Z\", \"assignerOrgId\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\", \"datePublished\": \"2024-06-25T14:22:41.566Z\", \"assignerShortName\": \"Linux\"}",
      "dataType": "CVE_RECORD",
      "dataVersion": "5.1"
    }
  }
}

Sightings

Author	Source	Type	Date	Other

Nomenclature

Seen: The vulnerability was mentioned, discussed, or observed by the user.
Confirmed: The vulnerability has been validated from an analyst's perspective.
Published Proof of Concept: A public proof of concept is available for this vulnerability.
Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
Not confirmed: The user expressed doubt about the validity of the vulnerability.
Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.

Detection rules are retrieved from Rulezet.

The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base model, served locally by ML-Gateway. They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.

Action not permitted

CVE-2024-39301 (GCVE-0-2024-39301)

Tags

Sightings

Nomenclature