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CVE-2025-38462 (GCVE-0-2025-38462)

Vulnerability from cvelistv5 – Published: 2025-07-25 15:27 – Updated: 2026-05-11 21:28
VLAI
Title
vsock: Fix transport_{g2h,h2g} TOCTOU
Summary
In the Linux kernel, the following vulnerability has been resolved: vsock: Fix transport_{g2h,h2g} TOCTOU vsock_find_cid() and vsock_dev_do_ioctl() may race with module unload. transport_{g2h,h2g} may become NULL after the NULL check. Introduce vsock_transport_local_cid() to protect from a potential null-ptr-deref. KASAN: null-ptr-deref in range [0x0000000000000118-0x000000000000011f] RIP: 0010:vsock_find_cid+0x47/0x90 Call Trace: __vsock_bind+0x4b2/0x720 vsock_bind+0x90/0xe0 __sys_bind+0x14d/0x1e0 __x64_sys_bind+0x6e/0xc0 do_syscall_64+0x92/0x1c0 entry_SYSCALL_64_after_hwframe+0x4b/0x53 KASAN: null-ptr-deref in range [0x0000000000000118-0x000000000000011f] RIP: 0010:vsock_dev_do_ioctl.isra.0+0x58/0xf0 Call Trace: __x64_sys_ioctl+0x12d/0x190 do_syscall_64+0x92/0x1c0 entry_SYSCALL_64_after_hwframe+0x4b/0x53
Severity
4.7 (Medium)
CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H
Assigner
References
Impacted products
Vendor Product Version CPE status
Linux Linux Affected: c0cfa2d8a788fcf45df5bf4070ab2474c88d543a , < c5496ee685c48ed1cc183cd4263602579bb4a615 (git)
Affected: c0cfa2d8a788fcf45df5bf4070ab2474c88d543a , < 80d7dc15805a93d520a249ac6d13d4f4df161c1b (git)
Affected: c0cfa2d8a788fcf45df5bf4070ab2474c88d543a , < 5752d8dbb3dfd7f1a9faf0f65377e60826ea9a17 (git)
Affected: c0cfa2d8a788fcf45df5bf4070ab2474c88d543a , < 401239811fa728fcdd53e360a91f157ffd23e1f4 (git)
Affected: c0cfa2d8a788fcf45df5bf4070ab2474c88d543a , < 3734d78210cceb2ee5615719a62a5c55ed381ff8 (git)
Affected: c0cfa2d8a788fcf45df5bf4070ab2474c88d543a , < 6a1bcab67bea797d83aa9dd948a0ac6ed52d121d (git)
Affected: c0cfa2d8a788fcf45df5bf4070ab2474c88d543a , < 209fd720838aaf1420416494c5505096478156b4 (git)
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Linux Linux Affected: 5.5
Unaffected: 0 , < 5.5 (semver)
Unaffected: 5.10.240 , ≤ 5.10.* (semver)
Unaffected: 5.15.189 , ≤ 5.15.* (semver)
Unaffected: 6.1.146 , ≤ 6.1.* (semver)
Unaffected: 6.6.99 , ≤ 6.6.* (semver)
Unaffected: 6.12.39 , ≤ 6.12.* (semver)
Unaffected: 6.15.7 , ≤ 6.15.* (semver)
Unaffected: 6.16 , ≤ * (original_commit_for_fix)
guessed Create a notification for this product.
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Se ha implementado vsock_transport_local_cid() para proteger contra una posible desreferencia de PTR nula. KASAN: null-ptr-deref in range [0x0000000000000118-0x000000000000011f] RIP: 0010:vsock_find_cid+0x47/0x90 Call Trace: __vsock_bind+0x4b2/0x720 vsock_bind+0x90/0xe0 __sys_bind+0x14d/0x1e0 __x64_sys_bind+0x6e/0xc0 do_syscall_64+0x92/0x1c0 entry_SYSCALL_64_after_hwframe+0x4b/0x53 KASAN: null-ptr-deref in range [0x0000000000000118-0x000000000000011f] RIP: 0010:vsock_dev_do_ioctl.isra.0+0x58/0xf0 Call Trace: __x64_sys_ioctl+0x12d/0x190 do_syscall_64+0x92/0x1c0 entry_SYSCALL_64_after_hwframe+0x4b/0x53\"}],\"affected\":[{\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"affectedData\":[{\"vendor\":\"Linux\",\"product\":\"Linux\",\"defaultStatus\":\"unaffected\",\"programFiles\":[\"net/vmw_vsock/af_vsock.c\"],\"repo\":\"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\",\"versions\":[{\"version\":\"c0cfa2d8a788fcf45df5bf4070ab2474c88d543a\",\"lessThan\":\"c5496ee685c48ed1cc183cd4263602579bb4a615\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"c0cfa2d8a788fcf45df5bf4070ab2474c88d543a\",\"lessThan\":\"80d7dc15805a93d520a249ac6d13d4f4df161c1b\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"c0cfa2d8a788fcf45df5bf4070ab2474c88d543a\",\"lessThan\":\"5752d8dbb3dfd7f1a9faf0f65377e60826ea9a17\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"c0cfa2d8a788fcf45df5bf4070ab2474c88d543a\",\"lessThan\":\"401239811fa728fcdd53e360a91f157ffd23e1f4\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"c0cfa2d8a788fcf45df5bf4070ab2474c88d543a\",\"lessThan\":\"3734d78210cceb2ee5615719a62a5c55ed381ff8\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"c0cfa2d8a788fcf45df5bf4070ab2474c88d543a\",\"lessThan\":\"6a1bcab67bea797d83aa9dd948a0ac6ed52d121d\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"c0cfa2d8a788fcf45df5bf4070ab2474c88d543a\",\"lessThan\":\"209fd720838aaf1420416494c5505096478156b4\",\"versionType\":\"git\",\"status\":\"affected\"}]},{\"vendor\":\"Linux\",\"product\":\"Linux\",\"defaultStatus\":\"affected\",\"programFiles\":[\"net/vmw_vsock/af_vsock.c\"],\"repo\":\"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\",\"versions\":[{\"version\":\"5.5\",\"status\":\"affected\"},{\"version\":\"0\",\"lessThan\":\"5.5\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"5.10.240\",\"lessThanOrEqual\":\"5.10.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"5.15.189\",\"lessThanOrEqual\":\"5.15.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"6.1.146\",\"lessThanOrEqual\":\"6.1.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"6.6.99\",\"lessThanOrEqual\":\"6.6.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"6.12.39\",\"lessThanOrEqual\":\"6.12.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"6.15.7\",\"lessThanOrEqual\":\"6.15.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"6.16\",\"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:H/PR:L/UI:N/S:U/C:N/I:N/A:H\",\"baseScore\":4.7,\"baseSeverity\":\"MEDIUM\",\"attackVector\":\"LOCAL\",\"attackComplexity\":\"HIGH\",\"privilegesRequired\":\"LOW\",\"userInteraction\":\"NONE\",\"scope\":\"UNCHANGED\",\"confidentialityImpact\":\"NONE\",\"integrityImpact\":\"NONE\",\"availabilityImpact\":\"HIGH\"},\"exploitabilityScore\":1.0,\"impactScore\":3.6}]},\"weaknesses\":[{\"source\":\"nvd@nist.gov\",\"type\":\"Primary\",\"description\":[{\"lang\":\"en\",\"value\":\"CWE-367\"}]}],\"configurations\":[{\"nodes\":[{\"operator\":\"OR\",\"negate\":false,\"cpeMatch\":[{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"5.5\",\"versionEndExcluding\":\"5.10.240\",\"matchCriteriaId\":\"0E73A49A-F9B2-470F-91B2-6FAB6239BDB6\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"5.11\",\"versionEndExcluding\":\"5.15.189\",\"matchCriteriaId\":\"3CE0FB9A-DBE8-48B6-BF6E-3C724A4991E3\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"5.16\",\"versionEndExcluding\":\"6.1.146\",\"matchCriteriaId\":\"D8DA1166-5C95-475E-BF65-1DF621968E96\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"6.2\",\"versionEndExcluding\":\"6.6.99\",\"matchCriteriaId\":\"B369699C-E0E6-42A4-BDEE-8E676ECEF6AA\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"6.7\",\"versionEndExcluding\":\"6.12.39\",\"matchCriteriaId\":\"18D57670-11F8-4B5A-AD56-EA32DD0F44E1\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"6.13\",\"versionEndExcluding\":\"6.15.7\",\"matchCriteriaId\":\"F9C46937-5FA9-4335-AD7B-E7FC29453CE1\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:6.16:rc1:*:*:*:*:*:*\",\"matchCriteriaId\":\"6D4894DB-CCFE-4602-B1BF-3960B2E19A01\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:6.16:rc2:*:*:*:*:*:*\",\"matchCriteriaId\":\"09709862-E348-4378-8632-5A7813EDDC86\"},{\"vulnerable\":true,\"criteria\":\"cpe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Party Advisory\"]},{\"url\":\"https://lists.debian.org/debian-lts-announce/2025/10/msg00008.html\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\",\"tags\":[\"Third Party Advisory\"]}]}}",
    "redhat_vex": {
      "aggregate_severity": "Moderate",
      "current_release_date": "2026-06-30T01:08:45+00:00",
      "cve": "CVE-2025-38462",
      "id": "CVE-2025-38462",
      "initial_release_date": "2025-07-25T00:00:00+00:00",
      "product_status:known_affected": "232",
      "product_status:known_not_affected": "42",
      "source": "Red Hat CSAF VEX",
      "status": "final",
      "title": "kernel: Linux kernel: Denial of Service in vsock due to TOCTOU race condition",
      "url": "https://security.access.redhat.com/data/csaf/v2/vex/2025/cve-2025-38462.json",
      "version": "3"
    },
    "suse_vex": {
      "aggregate_severity": "moderate",
      "current_release_date": "2026-08-28T17:00:53Z",
      "cve": "CVE-2025-38462",
      "id": "CVE-2025-38462",
      "initial_release_date": "2025-07-25T23:22:47Z",
      "product_status:first_fixed": "2",
      "product_status:known_affected": "580",
      "product_status:known_not_affected": "256",
      "product_status:recommended": "472",
      "source": "SUSE CSAF VEX",
      "status": "interim",
      "title": "SUSE CVE CVE-2025-38462",
      "url": "https://ftp.suse.com/pub/projects/security/csaf-vex/cve-2025-38462.json",
      "version": "42"
    }
  }
}



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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

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.


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.