CVE-2026-98631
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)
xsk: Use a 32-bit compare in xsk_map_gen_lookup
In the Linux kernel, the following vulnerability has been resolved: xsk: Use a 32-bit compare in xsk_map_gen_lookup xsk_map_gen_lookup() loads a u32 key and compares it with max_entries using BPF_JMP_IMM. BPF immediates are sign-extended to 64 bits, so a max_entries value of 0x80000000 or higher becomes a threshold larger than every zero-extended 32-bit key. An out-of-range index then skips the bounds check and the generated lookup reads past xsk_map[]. Compare with BPF_JMP32_IMM so the check stays in 32-bit unsigned range.
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) |
|---|---|---|---|---|---|
| e65650f291ee72fc578d6346080fc4699204ef2c | affected | git | c6d5c582d55a8f229d75e98d62eaa065b0deb18d | Unavailable | None listed |
| e65650f291ee72fc578d6346080fc4699204ef2c | affected | git | 227ec890559e922e235eb543646e3bf0bd8269b0 | Unavailable | None listed |
| e65650f291ee72fc578d6346080fc4699204ef2c | affected | git | 11d9be35c1f4233798e99be98bc474f83a254c6c | Unavailable | None listed |
| e65650f291ee72fc578d6346080fc4699204ef2c | affected | git | 123f90f394ca404ab8796a7c8072ff7fa5b65a9c | Unavailable | None listed |
| e65650f291ee72fc578d6346080fc4699204ef2c | affected | git | 36461e58f88a1b723f86693f437ac12e60ff4363 | Unavailable | None listed |
| e65650f291ee72fc578d6346080fc4699204ef2c | affected | git | b5c0cff0c5331582ab01c4c423731453a8381acc | Unavailable | None listed |
| e65650f291ee72fc578d6346080fc4699204ef2c | affected | git | 3c1e0a4bc156b8d5c5772dbc76b9ea74dce5ca24 | Unavailable | None listed |
| e65650f291ee72fc578d6346080fc4699204ef2c | affected | git | 70504de0bb627848667207bec7ccfd647deb8814 | 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) |
|---|---|---|---|---|---|
| 5.5 | affected | Unavailable | Unavailable | Unavailable | None listed |
| 0 | unaffected | semver | 5.5 | Unavailable | None listed |
| 5.10.271 | unaffected | semver | Unavailable | 5.10.* | None listed |
| 5.15.222 | unaffected | semver | Unavailable | 5.15.* | None listed |
| 6.1.189 | unaffected | semver | Unavailable | 6.1.* | None listed |
| 6.6.158 | unaffected | semver | Unavailable | 6.6.* | None listed |
| 6.12.112 | unaffected | semver | Unavailable | 6.12.* | None listed |
| 6.18.55 | unaffected | semver | Unavailable | 6.18.* | None listed |
| 7.2.9 | unaffected | semver | Unavailable | 7.2.* | None listed |
| 7.3 | unaffected | original_commit_for_fix | Unavailable | * | None listed |