CVE-2026-23272
CVE.org · Published
- Record status
- Published
- Identifier year (not publication year)
- 2026
- Source publication
- Source updated
- Imported by cveboard
- Source snapshot
- cve_2026-10-24_midnight_baseline ·
CNA source text (English)
netfilter: nf_tables: unconditionally bump set->nelems before insertion
In the Linux kernel, the following vulnerability has been resolved: netfilter: nf_tables: unconditionally bump set->nelems before insertion In case that the set is full, a new element gets published then removed without waiting for the RCU grace period, while RCU reader can be walking over it already. To address this issue, add the element transaction even if set is full, but toggle the set_full flag to report -ENFILE so the abort path safely unwinds the set to its previous state. As for element updates, decrement set->nelems to restore it. A simpler fix is to call synchronize_rcu() in the error path. However, with a large batch adding elements to already maxed-out set, this could cause noticeable slowdown of such batches.
Scoped product and version facts
Fix information unknown; no fixed version is derived here. Missing information does not prove that no fix exists.
Exploitation unknown; this catalogue does not assess exploitation.
Linux
- Vendor
- Linux
- Product
- Linux
- Platforms
- Unknown
- Default status
unaffected
| Version (version) | Status (status) | Version scheme (versionType) | Exclusive end (lessThan) | Inclusive end (lessThanOrEqual) | Status changes (at → status) |
|---|---|---|---|---|---|
| 35d0ac9070ef619e3bf44324375878a1c540387b | affected | git | 25fcaef7948912652905e96922f36583a84fffed | Unavailable | None listed |
| 35d0ac9070ef619e3bf44324375878a1c540387b | affected | git | e3ccb11fc8249759d23326038c8db987ddaabc77 | Unavailable | None listed |
| 35d0ac9070ef619e3bf44324375878a1c540387b | affected | git | 86bc4b1a0f672d47ac19f9022432cb6a2e01cb33 | Unavailable | None listed |
| 35d0ac9070ef619e3bf44324375878a1c540387b | affected | git | 6826131c7674329335ca25df2550163eb8a1fd0c | Unavailable | None listed |
| 35d0ac9070ef619e3bf44324375878a1c540387b | affected | git | ccb8c8f3c1127cf34d18c737309897c68046bf21 | Unavailable | None listed |
| 35d0ac9070ef619e3bf44324375878a1c540387b | affected | git | def602e498a4f951da95c95b1b8ce8ae68aa733a | Unavailable | None listed |
| fefdd79403e89b0c673965343b92e2e01e2713a8 | affected | git | Unavailable | Unavailable | None listed |
| 4.9.33 | affected | semver | 4.10 | Unavailable | None listed |
Linux
- Vendor
- Linux
- Product
- Linux
- Platforms
- Unknown
- Default status
affected
| Version (version) | Status (status) | Version scheme (versionType) | Exclusive end (lessThan) | Inclusive end (lessThanOrEqual) | Status changes (at → status) |
|---|---|---|---|---|---|
| 4.10 | affected | Unavailable | Unavailable | Unavailable | None listed |
| 0 | unaffected | semver | 4.10 | Unavailable | None listed |
| 6.1.177 | unaffected | semver | Unavailable | 6.1.* | None listed |
| 6.6.141 | unaffected | semver | Unavailable | 6.6.* | None listed |
| 6.12.91 | unaffected | semver | Unavailable | 6.12.* | None listed |
| 6.18.17 | unaffected | semver | Unavailable | 6.18.* | None listed |
| 6.19.7 | unaffected | semver | Unavailable | 6.19.* | None listed |
| 7.0 | unaffected | original_commit_for_fix | Unavailable | * | None listed |