CVE Explorer

CVE-2026-52946

In the Linux kernel, the following vulnerability has been resolved: fs/fcntl: fix SOFTIRQ-unsafe lock order in fasync signaling A SOFTIRQ-safe to SOFTIRQ-unsafe lock order deadlock can occur in send_sigio() and send_sigurg() when a process group receives a signal. When FASYNC is configured for a process group (PIDTYPE_PGID), both functions use read_lock(&tasklist_lock) to traverse the task list. However, they are frequently called from softirq context: - send_sigio() via input_inject_event ->

Lifecycle PUBLISHED1 preserved revisionFact urn:baitaphish:canonical-cve-fact-revision:v2:4498e9bf6a2329473a7f0d2858218c6c8ecbadbf3175c14e2374f7e6c6e21006

Known exploited

Not asserted

Disputed

Stale source

Conflicts

Preserved source conflicts

No provider value was silently selected as the winner.

affected · 2 assertions

{"defaultStatus":"affected","product":"Linux","programFiles":["fs/fcntl.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"status":"affected","version":"2.6.12"},{"lessThan":"2.6.12","status":"unaffected","version":"0","versionType":"semver"},{"lessThanOrEqual":"5.10.*","status":"unaffected","version":"5.10.259","versionType":"semver"},{"lessThanOrEqual":"5.15.*","status":"unaffected","version":"5.15.210","versionType":"semver"},{"lessThanOrEqual":"6.1.*","status":"unaffected","version":"6.1.176","versionType":"semver"},{"lessThanOrEqua…

cve_program_cvelist_v5affected
urn:baitaphish:normalized-source-record:v2:f6c308a537fe6ba7252c35297f23c71ab763917015e168aa4f9d097f5b458e8e · sha256:ece98b4190e77cbc… · /containers/cna/affected/1

{"defaultStatus":"unaffected","product":"Linux","programFiles":["fs/fcntl.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"lessThan":"54626335ea4174ab2d9a183b511d825f6765e47b","status":"affected","version":"1da177e4c3f41524e886b7f1b8a0c1fc7321cac2","versionType":"git"},{"lessThan":"897d6a7247739fb1528f98c575df4f2e5de7f994","status":"affected","version":"1da177e4c3f41524e886b7f1b8a0c1fc7321cac2","versionType":"git"},{"lessThan":"32dbd5ce4be3a3ed7e00f8af18795cc84fc50a33","status":"affected","version":"1da177e4c3f41524e886b7f1b8a0c1fc732…

cve_program_cvelist_v5affected
urn:baitaphish:normalized-source-record:v2:f6c308a537fe6ba7252c35297f23c71ab763917015e168aa4f9d097f5b458e8e · sha256:ece98b4190e77cbc… · /containers/cna/affected/0

Affected products and versions

2 source assertions

cve_program_cvelist_v5affected
urn:baitaphish:normalized-source-record:v2:f6c308a537fe6ba7252c35297f23c71ab763917015e168aa4f9d097f5b458e8e · sha256:ece98b4190e77cbc… · /containers/cna/affected/1

cve_program_cvelist_v5affected
urn:baitaphish:normalized-source-record:v2:f6c308a537fe6ba7252c35297f23c71ab763917015e168aa4f9d097f5b458e8e · sha256:ece98b4190e77cbc… · /containers/cna/affected/0

Provider-owned CVSS observations

1 source assertion

{"metric":{"baseScore":7.5,"baseSeverity":"HIGH","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","version":"3.1"},"metric_type":"cvssV3_1"}

cve_program_cvelist_v5cvss
urn:baitaphish:normalized-source-record:v2:f6c308a537fe6ba7252c35297f23c71ab763917015e168aa4f9d097f5b458e8e · sha256:ece98b4190e77cbc… · /containers/cna/metrics/0/cvssV3_1

Source references

9 source assertions

{"url":"https://git.kernel.org/stable/c/00633c4683828acd5256fa8d5163f440d74bbe71"}

cve_program_cvelist_v5reference
urn:baitaphish:normalized-source-record:v2:f6c308a537fe6ba7252c35297f23c71ab763917015e168aa4f9d097f5b458e8e · sha256:ece98b4190e77cbc… · /containers/cna/references/8

{"url":"https://git.kernel.org/stable/c/1bee417678f1135e35b25a37734db46aa94258d2"}

cve_program_cvelist_v5reference
urn:baitaphish:normalized-source-record:v2:f6c308a537fe6ba7252c35297f23c71ab763917015e168aa4f9d097f5b458e8e · sha256:ece98b4190e77cbc… · /containers/cna/references/4

{"url":"https://git.kernel.org/stable/c/20a93e397abe850c49b6fa0e8cc827b5f634a8f5"}

cve_program_cvelist_v5reference
urn:baitaphish:normalized-source-record:v2:f6c308a537fe6ba7252c35297f23c71ab763917015e168aa4f9d097f5b458e8e · sha256:ece98b4190e77cbc… · /containers/cna/references/5

{"url":"https://git.kernel.org/stable/c/32dbd5ce4be3a3ed7e00f8af18795cc84fc50a33"}

cve_program_cvelist_v5reference
urn:baitaphish:normalized-source-record:v2:f6c308a537fe6ba7252c35297f23c71ab763917015e168aa4f9d097f5b458e8e · sha256:ece98b4190e77cbc… · /containers/cna/references/2

{"url":"https://git.kernel.org/stable/c/36c1b57b2ecf3c61ac93f5f07bd29b6f21e226ed"}

cve_program_cvelist_v5reference
urn:baitaphish:normalized-source-record:v2:f6c308a537fe6ba7252c35297f23c71ab763917015e168aa4f9d097f5b458e8e · sha256:ece98b4190e77cbc… · /containers/cna/references/7

{"url":"https://git.kernel.org/stable/c/54626335ea4174ab2d9a183b511d825f6765e47b"}

cve_program_cvelist_v5reference
urn:baitaphish:normalized-source-record:v2:f6c308a537fe6ba7252c35297f23c71ab763917015e168aa4f9d097f5b458e8e · sha256:ece98b4190e77cbc… · /containers/cna/references/0

{"url":"https://git.kernel.org/stable/c/897d6a7247739fb1528f98c575df4f2e5de7f994"}

cve_program_cvelist_v5reference
urn:baitaphish:normalized-source-record:v2:f6c308a537fe6ba7252c35297f23c71ab763917015e168aa4f9d097f5b458e8e · sha256:ece98b4190e77cbc… · /containers/cna/references/1

{"url":"https://git.kernel.org/stable/c/b5fa9e32fb6718f70c986ee14dd5d01b4846f331"}

cve_program_cvelist_v5reference
urn:baitaphish:normalized-source-record:v2:f6c308a537fe6ba7252c35297f23c71ab763917015e168aa4f9d097f5b458e8e · sha256:ece98b4190e77cbc… · /containers/cna/references/3

{"url":"https://git.kernel.org/stable/c/bfcc8e8d8a495bb34cae9e620adfb75fb13a3954"}

cve_program_cvelist_v5reference
urn:baitaphish:normalized-source-record:v2:f6c308a537fe6ba7252c35297f23c71ab763917015e168aa4f9d097f5b458e8e · sha256:ece98b4190e77cbc… · /containers/cna/references/6

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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