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CVE-2026-43178

In the Linux kernel, the following vulnerability has been resolved: procfs: fix possible double mmput() in do_procmap_query() When user provides incorrectly sized buffer for build ID for PROCMAP_QUERY we return with -ENAMETOOLONG error. After recent changes this condition happens later, after we unlocked mmap_lock/per-VMA lock and did mmput(), so original goto out is now wrong and will double-mmput() mm_struct. Fix by jumping further to clean up only vm_file and name_buf.
Lifecycle PUBLISHED1 preserved revisionFact urn:baitaphish:canonical-cve-fact-revision:v2:7b86716a465d95928c0ac256f69006e1a6e7732b42301f00fb786eb2d6c3c88f
Known exploited
Not asserted
Disputed
No
Stale source
No
Conflicts
2

Preserved source conflicts

No provider value was silently selected as the winner.

affected · 10 assertions

{"collectionURL":"https://access.redhat.com/downloads/content/package-browser/","cpes":["cpe:/o:redhat:enterprise_linux:7"],"defaultStatus":"unaffected","packageName":"kernel-rt","product":"Red Hat Enterprise Linux 7","vendor":"Red Hat"}

  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:bd19d2e78a354d1af92bbd8c163a95fb6381a513c85c8be25e9321a7d5818978 · sha256:f1efa7ef56458af4… · /containers/adp/0/affected/3

{"collectionURL":"https://access.redhat.com/downloads/content/package-browser/","cpes":["cpe:/o:redhat:enterprise_linux:7"],"defaultStatus":"unaffected","packageName":"kernel","product":"Red Hat Enterprise Linux 7","vendor":"Red Hat"}

  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:bd19d2e78a354d1af92bbd8c163a95fb6381a513c85c8be25e9321a7d5818978 · sha256:f1efa7ef56458af4… · /containers/adp/0/affected/2

{"collectionURL":"https://access.redhat.com/downloads/content/package-browser/","cpes":["cpe:/o:redhat:enterprise_linux:9"],"defaultStatus":"unaffected","packageName":"kernel-rt","product":"Red Hat Enterprise Linux 9","vendor":"Red Hat"}

  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:bd19d2e78a354d1af92bbd8c163a95fb6381a513c85c8be25e9321a7d5818978 · sha256:f1efa7ef56458af4… · /containers/adp/0/affected/7

{"defaultStatus":"affected","product":"Linux","programFiles":["fs/proc/task_mmu.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"status":"affected","version":"6.19"},{"lessThan":"6.19","status":"unaffected","version":"0","versionType":"semver"},{"lessThanOrEqual":"6.12.*","status":"unaffected","version":"6.12.75","versionType":"semver"},{"lessThanOrEqual":"6.18.*","status":"unaffected","version":"6.18.16","versionType":"semver"},{"lessThanOrEqual":"6.19.*","status":"unaffected","version":"6.19.6","versionType":"semver"},{"lessThanOrEq…

  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:bd19d2e78a354d1af92bbd8c163a95fb6381a513c85c8be25e9321a7d5818978 · sha256:f1efa7ef56458af4… · /containers/cna/affected/1

{"collectionURL":"https://access.redhat.com/downloads/content/package-browser/","cpes":["cpe:/o:redhat:enterprise_linux:9"],"defaultStatus":"unaffected","packageName":"kernel","product":"Red Hat Enterprise Linux 9","vendor":"Red Hat"}

  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:bd19d2e78a354d1af92bbd8c163a95fb6381a513c85c8be25e9321a7d5818978 · sha256:f1efa7ef56458af4… · /containers/adp/0/affected/6

{"collectionURL":"https://access.redhat.com/downloads/content/package-browser/","cpes":["cpe:/o:redhat:enterprise_linux:10"],"defaultStatus":"unaffected","packageName":"kernel","product":"Red Hat Enterprise Linux 10","vendor":"Red Hat"}

  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:bd19d2e78a354d1af92bbd8c163a95fb6381a513c85c8be25e9321a7d5818978 · sha256:f1efa7ef56458af4… · /containers/adp/0/affected/0

{"collectionURL":"https://access.redhat.com/downloads/content/package-browser/","cpes":["cpe:/o:redhat:enterprise_linux:8"],"defaultStatus":"unaffected","packageName":"kernel","product":"Red Hat Enterprise Linux 8","vendor":"Red Hat"}

  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:bd19d2e78a354d1af92bbd8c163a95fb6381a513c85c8be25e9321a7d5818978 · sha256:f1efa7ef56458af4… · /containers/adp/0/affected/4

{"collectionURL":"https://access.redhat.com/downloads/content/package-browser/","cpes":["cpe:/o:redhat:enterprise_linux:6"],"defaultStatus":"unknown","packageName":"kernel","product":"Red Hat Enterprise Linux 6","vendor":"Red Hat"}

  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:bd19d2e78a354d1af92bbd8c163a95fb6381a513c85c8be25e9321a7d5818978 · sha256:f1efa7ef56458af4… · /containers/adp/0/affected/1

{"collectionURL":"https://access.redhat.com/downloads/content/package-browser/","cpes":["cpe:/o:redhat:enterprise_linux:8"],"defaultStatus":"unaffected","packageName":"kernel-rt","product":"Red Hat Enterprise Linux 8","vendor":"Red Hat"}

  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:bd19d2e78a354d1af92bbd8c163a95fb6381a513c85c8be25e9321a7d5818978 · sha256:f1efa7ef56458af4… · /containers/adp/0/affected/5

{"defaultStatus":"unaffected","product":"Linux","programFiles":["fs/proc/task_mmu.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"lessThan":"f9fe092084cd04deea18747f58a2304026e76aaa","status":"affected","version":"b9b97e6aeb534315f9646b2090d1a5024c6a4e82","versionType":"git"},{"lessThan":"8adaff87db143583e08eec4f4e7788f1ef8af94d","status":"affected","version":"cbc03ce3e6ce7e21214c3f02218213574c1a2d08","versionType":"git"},{"lessThan":"90f5e87c9b75833b9ef3a4415b92c0247f28ab2f","status":"affected","version":"b5cbacd7f86f4f62b8813688c8e…

  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:bd19d2e78a354d1af92bbd8c163a95fb6381a513c85c8be25e9321a7d5818978 · sha256:f1efa7ef56458af4… · /containers/cna/affected/0
cvss · 2 assertions

{"metric":{"attackComplexity":"HIGH","attackVector":"LOCAL","availabilityImpact":"HIGH","baseScore":7,"baseSeverity":"HIGH","confidentialityImpact":"HIGH","integrityImpact":"HIGH","privilegesRequired":"LOW","scope":"UNCHANGED","userInteraction":"NONE","vectorString":"CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H","version":"3.1"},"metric_type":"cvssV3_1"}

  • cve_program_cvelist_v5cvss
    urn:baitaphish:normalized-source-record:v2:bd19d2e78a354d1af92bbd8c163a95fb6381a513c85c8be25e9321a7d5818978 · sha256:f1efa7ef56458af4… · /containers/adp/0/metrics/1/cvssV3_1

{"metric":{"baseScore":7.8,"baseSeverity":"HIGH","vectorString":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","version":"3.1"},"metric_type":"cvssV3_1"}

  • cve_program_cvelist_v5cvss
    urn:baitaphish:normalized-source-record:v2:bd19d2e78a354d1af92bbd8c163a95fb6381a513c85c8be25e9321a7d5818978 · sha256:f1efa7ef56458af4… · /containers/cna/metrics/0/cvssV3_1

Affected products and versions

10 source assertions
{"collectionURL":"https://access.redhat.com/downloads/content/package-browser/","cpes":["cpe:/o:redhat:enterprise_linux:7"],"defaultStatus":"unaffected","packageName":"kernel-rt","product":"Red Hat Enterprise Linux 7","vendor":"Red Hat"}
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:bd19d2e78a354d1af92bbd8c163a95fb6381a513c85c8be25e9321a7d5818978 · sha256:f1efa7ef56458af4… · /containers/adp/0/affected/3
{"collectionURL":"https://access.redhat.com/downloads/content/package-browser/","cpes":["cpe:/o:redhat:enterprise_linux:7"],"defaultStatus":"unaffected","packageName":"kernel","product":"Red Hat Enterprise Linux 7","vendor":"Red Hat"}
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:bd19d2e78a354d1af92bbd8c163a95fb6381a513c85c8be25e9321a7d5818978 · sha256:f1efa7ef56458af4… · /containers/adp/0/affected/2
{"collectionURL":"https://access.redhat.com/downloads/content/package-browser/","cpes":["cpe:/o:redhat:enterprise_linux:9"],"defaultStatus":"unaffected","packageName":"kernel-rt","product":"Red Hat Enterprise Linux 9","vendor":"Red Hat"}
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:bd19d2e78a354d1af92bbd8c163a95fb6381a513c85c8be25e9321a7d5818978 · sha256:f1efa7ef56458af4… · /containers/adp/0/affected/7
{"defaultStatus":"affected","product":"Linux","programFiles":["fs/proc/task_mmu.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"status":"affected","version":"6.19"},{"lessThan":"6.19","status":"unaffected","version":"0","versionType":"semver"},{"lessThanOrEqual":"6.12.*","status":"unaffected","version":"6.12.75","versionType":"semver"},{"lessThanOrEqual":"6.18.*","status":"unaffected","version":"6.18.16","versionType":"semver"},{"lessThanOrEqual":"6.19.*","status":"unaffected","version":"6.19.6","versionType":"semver"},{"lessThanOrEq…
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:bd19d2e78a354d1af92bbd8c163a95fb6381a513c85c8be25e9321a7d5818978 · sha256:f1efa7ef56458af4… · /containers/cna/affected/1
{"collectionURL":"https://access.redhat.com/downloads/content/package-browser/","cpes":["cpe:/o:redhat:enterprise_linux:9"],"defaultStatus":"unaffected","packageName":"kernel","product":"Red Hat Enterprise Linux 9","vendor":"Red Hat"}
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:bd19d2e78a354d1af92bbd8c163a95fb6381a513c85c8be25e9321a7d5818978 · sha256:f1efa7ef56458af4… · /containers/adp/0/affected/6
{"collectionURL":"https://access.redhat.com/downloads/content/package-browser/","cpes":["cpe:/o:redhat:enterprise_linux:10"],"defaultStatus":"unaffected","packageName":"kernel","product":"Red Hat Enterprise Linux 10","vendor":"Red Hat"}
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:bd19d2e78a354d1af92bbd8c163a95fb6381a513c85c8be25e9321a7d5818978 · sha256:f1efa7ef56458af4… · /containers/adp/0/affected/0
{"collectionURL":"https://access.redhat.com/downloads/content/package-browser/","cpes":["cpe:/o:redhat:enterprise_linux:8"],"defaultStatus":"unaffected","packageName":"kernel","product":"Red Hat Enterprise Linux 8","vendor":"Red Hat"}
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:bd19d2e78a354d1af92bbd8c163a95fb6381a513c85c8be25e9321a7d5818978 · sha256:f1efa7ef56458af4… · /containers/adp/0/affected/4
{"collectionURL":"https://access.redhat.com/downloads/content/package-browser/","cpes":["cpe:/o:redhat:enterprise_linux:6"],"defaultStatus":"unknown","packageName":"kernel","product":"Red Hat Enterprise Linux 6","vendor":"Red Hat"}
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:bd19d2e78a354d1af92bbd8c163a95fb6381a513c85c8be25e9321a7d5818978 · sha256:f1efa7ef56458af4… · /containers/adp/0/affected/1
{"collectionURL":"https://access.redhat.com/downloads/content/package-browser/","cpes":["cpe:/o:redhat:enterprise_linux:8"],"defaultStatus":"unaffected","packageName":"kernel-rt","product":"Red Hat Enterprise Linux 8","vendor":"Red Hat"}
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:bd19d2e78a354d1af92bbd8c163a95fb6381a513c85c8be25e9321a7d5818978 · sha256:f1efa7ef56458af4… · /containers/adp/0/affected/5
{"defaultStatus":"unaffected","product":"Linux","programFiles":["fs/proc/task_mmu.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"lessThan":"f9fe092084cd04deea18747f58a2304026e76aaa","status":"affected","version":"b9b97e6aeb534315f9646b2090d1a5024c6a4e82","versionType":"git"},{"lessThan":"8adaff87db143583e08eec4f4e7788f1ef8af94d","status":"affected","version":"cbc03ce3e6ce7e21214c3f02218213574c1a2d08","versionType":"git"},{"lessThan":"90f5e87c9b75833b9ef3a4415b92c0247f28ab2f","status":"affected","version":"b5cbacd7f86f4f62b8813688c8e…
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:bd19d2e78a354d1af92bbd8c163a95fb6381a513c85c8be25e9321a7d5818978 · sha256:f1efa7ef56458af4… · /containers/cna/affected/0

Provider-owned CVSS observations

2 source assertions
{"metric":{"attackComplexity":"HIGH","attackVector":"LOCAL","availabilityImpact":"HIGH","baseScore":7,"baseSeverity":"HIGH","confidentialityImpact":"HIGH","integrityImpact":"HIGH","privilegesRequired":"LOW","scope":"UNCHANGED","userInteraction":"NONE","vectorString":"CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H","version":"3.1"},"metric_type":"cvssV3_1"}
  • cve_program_cvelist_v5cvss
    urn:baitaphish:normalized-source-record:v2:bd19d2e78a354d1af92bbd8c163a95fb6381a513c85c8be25e9321a7d5818978 · sha256:f1efa7ef56458af4… · /containers/adp/0/metrics/1/cvssV3_1
{"metric":{"baseScore":7.8,"baseSeverity":"HIGH","vectorString":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","version":"3.1"},"metric_type":"cvssV3_1"}
  • cve_program_cvelist_v5cvss
    urn:baitaphish:normalized-source-record:v2:bd19d2e78a354d1af92bbd8c163a95fb6381a513c85c8be25e9321a7d5818978 · sha256:f1efa7ef56458af4… · /containers/cna/metrics/0/cvssV3_1

CWE assertions

1 source assertion
{"cweId":"CWE-1341","description":"Multiple Releases of Same Resource or Handle","lang":"en","type":"CWE"}
  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:bd19d2e78a354d1af92bbd8c163a95fb6381a513c85c8be25e9321a7d5818978 · sha256:f1efa7ef56458af4… · /containers/adp/0/problemTypes/0/descriptions/0

Source references

7 source assertions
{"tags":["vdb-entry","x_refsource_REDHAT"],"url":"https://access.redhat.com/security/cve/CVE-2026-43178"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:bd19d2e78a354d1af92bbd8c163a95fb6381a513c85c8be25e9321a7d5818978 · sha256:f1efa7ef56458af4… · /containers/adp/0/references/0
{"name":"RHBZ#2467227","tags":["issue-tracking","x_refsource_REDHAT"],"url":"https://bugzilla.redhat.com/show_bug.cgi?id=2467227"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:bd19d2e78a354d1af92bbd8c163a95fb6381a513c85c8be25e9321a7d5818978 · sha256:f1efa7ef56458af4… · /containers/adp/0/references/1
{"url":"https://git.kernel.org/stable/c/61dc9f776705d6db6847c101b98fa4f0e9eb6fa3"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:bd19d2e78a354d1af92bbd8c163a95fb6381a513c85c8be25e9321a7d5818978 · sha256:f1efa7ef56458af4… · /containers/cna/references/3
{"url":"https://git.kernel.org/stable/c/8adaff87db143583e08eec4f4e7788f1ef8af94d"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:bd19d2e78a354d1af92bbd8c163a95fb6381a513c85c8be25e9321a7d5818978 · sha256:f1efa7ef56458af4… · /containers/cna/references/1
{"url":"https://git.kernel.org/stable/c/90f5e87c9b75833b9ef3a4415b92c0247f28ab2f"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:bd19d2e78a354d1af92bbd8c163a95fb6381a513c85c8be25e9321a7d5818978 · sha256:f1efa7ef56458af4… · /containers/cna/references/2
{"url":"https://git.kernel.org/stable/c/f9fe092084cd04deea18747f58a2304026e76aaa"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:bd19d2e78a354d1af92bbd8c163a95fb6381a513c85c8be25e9321a7d5818978 · sha256:f1efa7ef56458af4… · /containers/cna/references/0
{"tags":["x_sadp-csaf-vex"],"url":"https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-43178.json"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:bd19d2e78a354d1af92bbd8c163a95fb6381a513c85c8be25e9321a7d5818978 · sha256:f1efa7ef56458af4… · /containers/adp/0/references/2

Attribution and limitations

  • CVE Program CVEList V5: Reproduce the MITRE copyright designation and CVE license in copies. Source →

Provider severity values are preserved separately. Baitaphish does not convert them into a risk rating, infer affected products, or treat EPSS as observed exploitation.

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