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CVE-2022-50543 (GCVE-0-2022-50543)

Vulnerability from cvelistv5 – Published: 2025-10-07 15:21 – Updated: 2026-08-05 08:59
VLAI
Title
RDMA/rxe: Fix mr->map double free
Summary
In the Linux kernel, the following vulnerability has been resolved: RDMA/rxe: Fix mr->map double free rxe_mr_cleanup() which tries to free mr->map again will be called when rxe_mr_init_user() fails: CPU: 0 PID: 4917 Comm: rdma_flush_serv Kdump: loaded Not tainted 6.1.0-rc1-roce-flush+ #25 Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.0-0-gd239552ce722-prebuilt.qemu.org 04/01/2014 Call Trace: <TASK> dump_stack_lvl+0x45/0x5d panic+0x19e/0x349 end_report.part.0+0x54/0x7c kasan_report.cold+0xa/0xf rxe_mr_cleanup+0x9d/0xf0 [rdma_rxe] __rxe_cleanup+0x10a/0x1e0 [rdma_rxe] rxe_reg_user_mr+0xb7/0xd0 [rdma_rxe] ib_uverbs_reg_mr+0x26a/0x480 [ib_uverbs] ib_uverbs_handler_UVERBS_METHOD_INVOKE_WRITE+0x1a2/0x250 [ib_uverbs] ib_uverbs_cmd_verbs+0x1397/0x15a0 [ib_uverbs] This issue was firstly exposed since commit b18c7da63fcb ("RDMA/rxe: Fix memory leak in error path code") and then we fixed it in commit 8ff5f5d9d8cf ("RDMA/rxe: Prevent double freeing rxe_map_set()") but this fix was reverted together at last by commit 1e75550648da (Revert "RDMA/rxe: Create duplicate mapping tables for FMRs") Simply let rxe_mr_cleanup() always handle freeing the mr->map once it is successfully allocated.
Severity
7.8 (High)
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
SSVC
Exploitation: none Automatable: no Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-06-10 20:40 UTC
Assigner
References
Impacted products
Vendor Product Version CPE status
Linux Linux Affected: 1e75550648da1fa1cd1969e7597355de8fe8caf6 , < 6ce577f09013206e36e674cd27da3707b2278268 (git)
Affected: 1e75550648da1fa1cd1969e7597355de8fe8caf6 , < 06f73568f553b5be6ba7f6fe274d333ea29fc46d (git)
Affected: 1e75550648da1fa1cd1969e7597355de8fe8caf6 , < 7d984dac8f6bf4ebd3398af82b357e1d181ecaac (git)
Affected: e004a35e8148ad9fc438b0479884641acf382896 (git)
Affected: 5.19.4 , < 5.20 (semver)
guessed Create a notification for this product.
Linux Linux Affected: 6.0
Unaffected: 0 , < 6.0 (semver)
Unaffected: 6.0.16 , ≤ 6.0.* (semver)
Unaffected: 6.1.2 , ≤ 6.1.* (semver)
Unaffected: 6.2 , ≤ * (original_commit_for_fix)
guessed Create a notification for this product.
Show details on NVD website
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    },
    "vulnrichment": {
      "containers": "{\"adp\": [{\"title\": \"CISA ADP Vulnrichment\", \"metrics\": [{\"other\": {\"type\": \"ssvc\", \"content\": {\"id\": \"CVE-2022-50543\", \"role\": \"CISA Coordinator\", \"options\": [{\"Exploitation\": \"none\"}, {\"Automatable\": \"no\"}, {\"Technical Impact\": \"total\"}], \"version\": \"2.0.3\", \"timestamp\": \"2026-06-10T20:40:50.837424Z\"}}}], \"providerMetadata\": {\"orgId\": \"134c704f-9b21-4f2e-91b3-4a467353bcc0\", \"shortName\": \"CISA-ADP\", \"dateUpdated\": \"2026-06-11T17:37:41.792Z\"}}], \"cna\": {\"title\": \"RDMA/rxe: Fix mr-\u003emap double free\", \"affected\": [{\"repo\": \"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\", \"vendor\": \"Linux\", \"product\": \"Linux\", \"versions\": [{\"status\": \"affected\", \"version\": \"1e75550648da1fa1cd1969e7597355de8fe8caf6\", \"lessThan\": \"6ce577f09013206e36e674cd27da3707b2278268\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"1e75550648da1fa1cd1969e7597355de8fe8caf6\", \"lessThan\": \"06f73568f553b5be6ba7f6fe274d333ea29fc46d\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"1e75550648da1fa1cd1969e7597355de8fe8caf6\", \"lessThan\": \"7d984dac8f6bf4ebd3398af82b357e1d181ecaac\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"e004a35e8148ad9fc438b0479884641acf382896\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"5.19.4\", \"lessThan\": \"5.20\", \"versionType\": \"semver\"}], \"programFiles\": [\"drivers/infiniband/sw/rxe/rxe_mr.c\"], \"defaultStatus\": \"unaffected\"}, {\"repo\": \"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\", \"vendor\": \"Linux\", \"product\": \"Linux\", \"versions\": [{\"status\": \"affected\", \"version\": \"6.0\"}, {\"status\": \"unaffected\", \"version\": \"0\", \"lessThan\": \"6.0\", \"versionType\": \"semver\"}, {\"status\": \"unaffected\", \"version\": \"6.0.16\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"6.0.*\"}, {\"status\": \"unaffected\", \"version\": \"6.1.2\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"6.1.*\"}, {\"status\": \"unaffected\", \"version\": \"6.2\", \"versionType\": \"original_commit_for_fix\", \"lessThanOrEqual\": \"*\"}], \"programFiles\": [\"drivers/infiniband/sw/rxe/rxe_mr.c\"], \"defaultStatus\": \"affected\"}], \"references\": [{\"url\": \"https://git.kernel.org/stable/c/6ce577f09013206e36e674cd27da3707b2278268\"}, {\"url\": \"https://git.kernel.org/stable/c/06f73568f553b5be6ba7f6fe274d333ea29fc46d\"}, {\"url\": \"https://git.kernel.org/stable/c/7d984dac8f6bf4ebd3398af82b357e1d181ecaac\"}], \"x_generator\": {\"engine\": \"bippy-1.2.0\"}, \"descriptions\": [{\"lang\": \"en\", \"value\": \"In the Linux kernel, the following vulnerability has been resolved:\\n\\nRDMA/rxe: Fix mr-\u003emap double free\\n\\nrxe_mr_cleanup() which tries to free mr-\u003emap again will be called when\\nrxe_mr_init_user() fails:\\n\\n   CPU: 0 PID: 4917 Comm: rdma_flush_serv Kdump: loaded Not tainted 6.1.0-rc1-roce-flush+ #25\\n   Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.0-0-gd239552ce722-prebuilt.qemu.org 04/01/2014\\n   Call Trace:\\n    \u003cTASK\u003e\\n    dump_stack_lvl+0x45/0x5d\\n    panic+0x19e/0x349\\n    end_report.part.0+0x54/0x7c\\n    kasan_report.cold+0xa/0xf\\n    rxe_mr_cleanup+0x9d/0xf0 [rdma_rxe]\\n    __rxe_cleanup+0x10a/0x1e0 [rdma_rxe]\\n    rxe_reg_user_mr+0xb7/0xd0 [rdma_rxe]\\n    ib_uverbs_reg_mr+0x26a/0x480 [ib_uverbs]\\n    ib_uverbs_handler_UVERBS_METHOD_INVOKE_WRITE+0x1a2/0x250 [ib_uverbs]\\n    ib_uverbs_cmd_verbs+0x1397/0x15a0 [ib_uverbs]\\n\\nThis issue was firstly exposed since commit b18c7da63fcb (\\\"RDMA/rxe: Fix\\nmemory leak in error path code\\\") and then we fixed it in commit\\n8ff5f5d9d8cf (\\\"RDMA/rxe: Prevent double freeing rxe_map_set()\\\") but this\\nfix was reverted together at last by commit 1e75550648da (Revert\\n\\\"RDMA/rxe: Create duplicate mapping tables for FMRs\\\")\\n\\nSimply let rxe_mr_cleanup() always handle freeing the mr-\u003emap once it is\\nsuccessfully allocated.\"}], \"cpeApplicability\": [{\"nodes\": [{\"negate\": false, \"cpeMatch\": [{\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"6.0.16\", \"versionStartIncluding\": \"6.0\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"6.1.2\", \"versionStartIncluding\": \"6.0\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"6.2\", \"versionStartIncluding\": \"6.0\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionStartIncluding\": \"5.19.4\"}], \"operator\": \"OR\"}]}], \"providerMetadata\": {\"orgId\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\", \"shortName\": \"Linux\", \"dateUpdated\": \"2026-05-23T15:24:43.257Z\"}}}",
      "cveMetadata": "{\"cveId\": \"CVE-2022-50543\", \"state\": \"PUBLISHED\", \"dateUpdated\": \"2026-06-11T18:44:06.141Z\", \"dateReserved\": \"2025-10-07T15:15:38.667Z\", \"assignerOrgId\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\", \"datePublished\": \"2025-10-07T15:21:07.939Z\", \"assignerShortName\": \"Linux\"}",
      "dataType": "CVE_RECORD",
      "dataVersion": "5.2"
    }
  }
}



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Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

Sightings

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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.


Related by attack behaviour

Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.