CVE-2026-23455
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_conntrack_h323: check for zero length in DecodeQ931()
In the Linux kernel, the following vulnerability has been resolved: netfilter: nf_conntrack_h323: check for zero length in DecodeQ931() In DecodeQ931(), the UserUserIE code path reads a 16-bit length from the packet, then decrements it by 1 to skip the protocol discriminator byte before passing it to DecodeH323_UserInformation(). If the encoded length is 0, the decrement wraps to -1, which is then passed as a large value to the decoder, leading to an out-of-bounds read. Add a check to ensure len is positive after the decrement.
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) |
|---|---|---|---|---|---|
| 5e35941d990123f155b02d5663e51a24f816b6f3 | affected | git | 2121f5fbe88daff0f1fc5bc47d359426c74b86b0 | Unavailable | None listed |
| 5e35941d990123f155b02d5663e51a24f816b6f3 | affected | git | 65fa92f79677858b14b9e4b7275f26639afe2710 | Unavailable | None listed |
| 5e35941d990123f155b02d5663e51a24f816b6f3 | affected | git | 495e97af9e7249ee02b72bb1d0848a6efc3700f4 | Unavailable | None listed |
| 5e35941d990123f155b02d5663e51a24f816b6f3 | affected | git | f5e4f4e4cdb75ec36802059a94195a31f193da60 | Unavailable | None listed |
| 5e35941d990123f155b02d5663e51a24f816b6f3 | affected | git | 633e8f87dad32263f6a57dccdb873f042c062111 | Unavailable | None listed |
| 5e35941d990123f155b02d5663e51a24f816b6f3 | affected | git | 9d00fe7d6d7c5b5f1065a6e042b54f2e44bd6df8 | Unavailable | None listed |
| 5e35941d990123f155b02d5663e51a24f816b6f3 | affected | git | b652b05d51003ac074b912684f9ec7486231717b | Unavailable | None listed |
| 5e35941d990123f155b02d5663e51a24f816b6f3 | affected | git | f173d0f4c0f689173f8cdac79991043a4a89bf66 | 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) |
|---|---|---|---|---|---|
| 2.6.17 | affected | Unavailable | Unavailable | Unavailable | None listed |
| 0 | unaffected | semver | 2.6.17 | Unavailable | None listed |
| 5.10.253 | unaffected | semver | Unavailable | 5.10.* | None listed |
| 5.15.203 | unaffected | semver | Unavailable | 5.15.* | None listed |
| 6.1.167 | unaffected | semver | Unavailable | 6.1.* | None listed |
| 6.6.130 | unaffected | semver | Unavailable | 6.6.* | None listed |
| 6.12.78 | unaffected | semver | Unavailable | 6.12.* | None listed |
| 6.18.20 | unaffected | semver | Unavailable | 6.18.* | None listed |
| 6.19.10 | unaffected | semver | Unavailable | 6.19.* | None listed |
| 7.0 | unaffected | original_commit_for_fix | Unavailable | * | None listed |