Baitaphish
Security intelligence
SearchLatest briefing
CVE Explorer

CVE-2026-31458

In the Linux kernel, the following vulnerability has been resolved: mm/damon/sysfs: check contexts->nr before accessing contexts_arr[0] Multiple sysfs command paths dereference contexts_arr[0] without first verifying that kdamond->contexts->nr == 1. A user can set nr_contexts to 0 via sysfs while DAMON is running, causing NULL pointer dereferences. In more detail, the issue can be triggered by privileged users like below. First, start DAMON and make contexts directory empty (kdamond->contex
Lifecycle PUBLISHED1 preserved revisionFact urn:baitaphish:canonical-cve-fact-revision:v2:387248afddadb55dfbed258a0fc7225efb9032df7c6317a88a931d5d37bff71e
Known exploited
Not asserted
Disputed
No
Stale source
No
Conflicts
1

Preserved source conflicts

No provider value was silently selected as the winner.

affected · 2 assertions

{"defaultStatus":"unaffected","product":"Linux","programFiles":["mm/damon/sysfs.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"lessThan":"aba546061341b56e9ffb37e1eb661a3628b6ec12","status":"affected","version":"0ac32b8affb5a384253dbb8339bd2d0e91add0b7","versionType":"git"},{"lessThan":"1e8da792672481d603fa7cd0d815577220a3ee27","status":"affected","version":"0ac32b8affb5a384253dbb8339bd2d0e91add0b7","versionType":"git"},{"lessThan":"708033c231bd782858f4ddbb46ee874a5a5fbdab","status":"affected","version":"0ac32b8affb5a384253dbb8339bd2…

  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:e2d65da64fbb5e3e343e699b2fdf1fa018353f851067024804f18b7e9e12bb75 · sha256:202fd601b2cc34cd… · /containers/cna/affected/0

{"defaultStatus":"affected","product":"Linux","programFiles":["mm/damon/sysfs.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"status":"affected","version":"5.18"},{"lessThan":"5.18","status":"unaffected","version":"0","versionType":"semver"},{"lessThanOrEqual":"6.6.*","status":"unaffected","version":"6.6.131","versionType":"semver"},{"lessThanOrEqual":"6.12.*","status":"unaffected","version":"6.12.80","versionType":"semver"},{"lessThanOrEqual":"6.18.*","status":"unaffected","version":"6.18.21","versionType":"semver"},{"lessThanOrEqua…

  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:e2d65da64fbb5e3e343e699b2fdf1fa018353f851067024804f18b7e9e12bb75 · sha256:202fd601b2cc34cd… · /containers/cna/affected/1

Affected products and versions

2 source assertions
{"defaultStatus":"unaffected","product":"Linux","programFiles":["mm/damon/sysfs.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"lessThan":"aba546061341b56e9ffb37e1eb661a3628b6ec12","status":"affected","version":"0ac32b8affb5a384253dbb8339bd2d0e91add0b7","versionType":"git"},{"lessThan":"1e8da792672481d603fa7cd0d815577220a3ee27","status":"affected","version":"0ac32b8affb5a384253dbb8339bd2d0e91add0b7","versionType":"git"},{"lessThan":"708033c231bd782858f4ddbb46ee874a5a5fbdab","status":"affected","version":"0ac32b8affb5a384253dbb8339bd2…
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:e2d65da64fbb5e3e343e699b2fdf1fa018353f851067024804f18b7e9e12bb75 · sha256:202fd601b2cc34cd… · /containers/cna/affected/0
{"defaultStatus":"affected","product":"Linux","programFiles":["mm/damon/sysfs.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"status":"affected","version":"5.18"},{"lessThan":"5.18","status":"unaffected","version":"0","versionType":"semver"},{"lessThanOrEqual":"6.6.*","status":"unaffected","version":"6.6.131","versionType":"semver"},{"lessThanOrEqual":"6.12.*","status":"unaffected","version":"6.12.80","versionType":"semver"},{"lessThanOrEqual":"6.18.*","status":"unaffected","version":"6.18.21","versionType":"semver"},{"lessThanOrEqua…
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:e2d65da64fbb5e3e343e699b2fdf1fa018353f851067024804f18b7e9e12bb75 · sha256:202fd601b2cc34cd… · /containers/cna/affected/1

Source references

5 source assertions
{"url":"https://git.kernel.org/stable/c/1bfe9fb5ed2667fb075682408b776b5273162615"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:e2d65da64fbb5e3e343e699b2fdf1fa018353f851067024804f18b7e9e12bb75 · sha256:202fd601b2cc34cd… · /containers/cna/references/4
{"url":"https://git.kernel.org/stable/c/1e8da792672481d603fa7cd0d815577220a3ee27"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:e2d65da64fbb5e3e343e699b2fdf1fa018353f851067024804f18b7e9e12bb75 · sha256:202fd601b2cc34cd… · /containers/cna/references/1
{"url":"https://git.kernel.org/stable/c/708033c231bd782858f4ddbb46ee874a5a5fbdab"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:e2d65da64fbb5e3e343e699b2fdf1fa018353f851067024804f18b7e9e12bb75 · sha256:202fd601b2cc34cd… · /containers/cna/references/2
{"url":"https://git.kernel.org/stable/c/aba546061341b56e9ffb37e1eb661a3628b6ec12"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:e2d65da64fbb5e3e343e699b2fdf1fa018353f851067024804f18b7e9e12bb75 · sha256:202fd601b2cc34cd… · /containers/cna/references/0
{"url":"https://git.kernel.org/stable/c/bbe03ad3fb9e714191757ca7b41582f930be7be2"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:e2d65da64fbb5e3e343e699b2fdf1fa018353f851067024804f18b7e9e12bb75 · sha256:202fd601b2cc34cd… · /containers/cna/references/3

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.

← Back to CVE Explorer