UnratedFix available
apparmor: fix NULL sock in aa_sock_file_perm
Type: advisorySources: OSV
In the Linux kernel, the following vulnerability has been resolved: apparmor: fix NULL sock in aa_sock_file_perm Deal with the potential that sock and sock-sk can be NULL during socket setup or teardown. This could lead to an oops. The fix for NULL pointer dereference in __unix_needs_revalidation shows this is at least possible for af_unix sockets. While the fix for af_unix sockets applies for newer mediation this is still the fall back path for older af_unix mediation and other sockets, so ensure it is covered.
- Products
- Kernel
- Affected versions
- Not specified
- Fixed versions
- 5.10.252, 5.15.202, 6.1.165, 6.12.75, 6.18.14, 6.19.4, 6.6.128
- CVEs
- CVE-2026-45848
- Confirmed fixed CVEs
- Not specified
- Updated in this feed
- 7 Nov 2026, 04:38 UTC · Revision 1
Source evidence
apparmor: fix NULL sock in aa_sock_file_perm
core-osv · Original sourcePublished 27 May 2026, 12:15 UTC
In the Linux kernel, the following vulnerability has been resolved: apparmor: fix NULL sock in aa_sock_file_perm Deal with the potential that sock and sock-sk can be NULL during socket setup or teardown. This could lead to an oops. The fix for NULL pointer dereference in __unix_needs_revalidation shows this is at least possible for af_unix sockets. While the fix for af_unix sockets applies for newer mediation this is still the fall back path for older af_unix mediation and other sockets, so ensure it is covered.
osv:CVE-2026-45848
Kernel
Fixed versions: 5.10.252, 5.15.202, 6.1.165, 6.6.128, 6.12.75, 6.18.14, 6.19.4
Complete source record
{
"id": "e8237c9ddd88e3284b53645316099fa52d22174cc93e103e967d86aa3d3a06af",
"url": "https://osv.dev/vulnerability/CVE-2026-45848",
"method": "structured",
"payload": {
"kind": "advisory",
"title": "apparmor: fix NULL sock in aa_sock_file_perm",
"summary": "In the Linux kernel, the following vulnerability has been resolved: apparmor: fix NULL sock in aa_sock_file_perm Deal with the potential that sock and sock-sk can be NULL during socket setup or teardown. This could lead to an oops. The fix for NULL pointer dereference in __unix_needs_revalidation shows this is at least possible for af_unix sockets. While the fix for af_unix sockets applies for newer mediation this is still the fall back path for older af_unix mediation and other sockets, so ensure it is covered.",
"evidence": "osv:CVE-2026-45848",
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"modified": "2026-10-28T02:30:49.974305842Z",
"provider": "osv",
"references": [
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"https://git.kernel.org/stable/c/68538ec34fcb4194c7961dc4eca6f5537fec8067",
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"https://git.kernel.org/stable/c/c11b7c3280d000376e27ebfed17ec7046699eab4",
"https://git.kernel.org/stable/c/ccb66a3c6c8f51b3ed1bc003b70bb9ff99e8d835",
"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/45xxx/CVE-2026-45848.json",
"https://nvd.nist.gov/vuln/detail/CVE-2026-45848",
"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git"
],
"provider_metadata": {
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"osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/45xxx/CVE-2026-45848.json"
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},
"related_cves": [
{
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"evidence": "/id"
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],
"security_relevant": true,
"severity_evidence": null
},
"source_id": "core-osv",
"document_id": 518193,
"published_at": "2026-05-27T12:15:12.31+00:00"
}