Answer in brief
CVE-2026-45848 records a Medium severity (CVSS 5.5) vulnerability in apparmor: fix NULL sock in aa_sock_file_perm. The current sources do not mark it as known exploited. The current feed maps Linux/Linux (generic), Linux/Linux (generic). Check affected ranges and fixed versions before updating.
Analysis pending evidence review
HOL Guard separates source facts from reviewed analysis. See the methodology.
Answer in brief
CVE-2026-45848 records a Medium severity (CVSS 5.5) vulnerability in apparmor: fix NULL sock in aa_sock_file_perm. The current sources do not mark it as known exploited. The current feed maps Linux/Linux (generic), Linux/Linux (generic). Check affected ranges and fixed versions before updating.
Analysis pending evidence review
HOL Guard separates source facts from reviewed analysis. See the methodology.
CVSS is 5.5. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.
Analysis status
Analysis pending evidence review
Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.
The current feed maps Linux/Linux (generic), Linux/Linux (generic). Check affected ranges and fixed versions before updating.
| Package | Affected range | Fixed version |
|---|---|---|
| Linux/Linuxgeneric | >=56974a6fcfef69ee0825bd66ed13e92070ac5224 <68538ec34fcb4194c7961dc4eca6f5537fec8067 || >=56974a6fcfef69ee0825bd66ed13e92070ac5224 <5121b7283f1c46e4c06b88b1dda7b064429d77de || >=56974a6fcfef69ee0825bd66ed13e92070ac5224 <c11b7c3280d000376e27ebfed17ec7046699eab4 || >=56974a6fcfef69ee0825bd66ed13e92070ac5224 <0dc19bca22606f7a61d5988408f74e3ae0ef3486 || >=56974a6fcfef69ee0825bd66ed13e92070ac5224 <3852eb9a0392eb435c03dcb47d581bcfe6a9a95b || >=56974a6fcfef69ee0825bd66ed13e92070ac5224 <ccb66a3c6c8f51b3ed1bc003b70bb9ff99e8d835 || >=56974a6fcfef69ee0825bd66ed13e92070ac5224 <8a0ededbfcff74598f82f1d4b8ef9db28878b317 || >=56974a6fcfef69ee0825bd66ed13e92070ac5224 <00b67657535dfea56e84d11492f5c0f61d0af297 | 68538ec34fcb4194c7961dc4eca6f5537fec8067, 5121b7283f1c46e4c06b88b1dda7b064429d77de, c11b7c3280d000376e27ebfed17ec7046699eab4, 0dc19bca22606f7a61d5988408f74e3ae0ef3486, 3852eb9a0392eb435c03dcb47d581bcfe6a9a95b, ccb66a3c6c8f51b3ed1bc003b70bb9ff99e8d835, 8a0ededbfcff74598f82f1d4b8ef9db28878b317, 00b67657535dfea56e84d11492f5c0f61d0af297 |
| Linux/Linuxgeneric | 4.17 | Not reported |
Published upstream
May 27, 2026
Evidence: source:cvelist:source_dates:source-dates:recordSource modified
Jun 25, 2026
Evidence: source:cvelist:source_dates:source-dates:recordFirst seen by HOL
Jun 25, 2026
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.
Quoted source text, attributed separately from HOL analysis.
CVSS is 5.5. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.
Analysis status
Analysis pending evidence review
Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.
The current feed maps Linux/Linux (generic), Linux/Linux (generic). Check affected ranges and fixed versions before updating.
| Package | Affected range | Fixed version |
|---|---|---|
| Linux/Linuxgeneric | >=56974a6fcfef69ee0825bd66ed13e92070ac5224 <68538ec34fcb4194c7961dc4eca6f5537fec8067 || >=56974a6fcfef69ee0825bd66ed13e92070ac5224 <5121b7283f1c46e4c06b88b1dda7b064429d77de || >=56974a6fcfef69ee0825bd66ed13e92070ac5224 <c11b7c3280d000376e27ebfed17ec7046699eab4 || >=56974a6fcfef69ee0825bd66ed13e92070ac5224 <0dc19bca22606f7a61d5988408f74e3ae0ef3486 || >=56974a6fcfef69ee0825bd66ed13e92070ac5224 <3852eb9a0392eb435c03dcb47d581bcfe6a9a95b || >=56974a6fcfef69ee0825bd66ed13e92070ac5224 <ccb66a3c6c8f51b3ed1bc003b70bb9ff99e8d835 || >=56974a6fcfef69ee0825bd66ed13e92070ac5224 <8a0ededbfcff74598f82f1d4b8ef9db28878b317 || >=56974a6fcfef69ee0825bd66ed13e92070ac5224 <00b67657535dfea56e84d11492f5c0f61d0af297 | 68538ec34fcb4194c7961dc4eca6f5537fec8067, 5121b7283f1c46e4c06b88b1dda7b064429d77de, c11b7c3280d000376e27ebfed17ec7046699eab4, 0dc19bca22606f7a61d5988408f74e3ae0ef3486, 3852eb9a0392eb435c03dcb47d581bcfe6a9a95b, ccb66a3c6c8f51b3ed1bc003b70bb9ff99e8d835, 8a0ededbfcff74598f82f1d4b8ef9db28878b317, 00b67657535dfea56e84d11492f5c0f61d0af297 |
| Linux/Linuxgeneric | 4.17 | Not reported |
Published upstream
May 27, 2026
Evidence: source:cvelist:source_dates:source-dates:recordSource modified
Jun 25, 2026
Evidence: source:cvelist:source_dates:source-dates:recordFirst seen by HOL
Jun 25, 2026
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.
Quoted source text, attributed separately from HOL analysis.