CVE-2026-53218
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: nft_exthdr: fix register tracking for F_PRESENT flag
In the Linux kernel, the following vulnerability has been resolved: netfilter: nft_exthdr: fix register tracking for F_PRESENT flag nft_exthdr_init() passes user-controlled priv->len to nft_parse_register_store(), which marks that many bytes in the register bitmap as initialized. However, when NFT_EXTHDR_F_PRESENT is set, the eval paths write only 1 byte (nft_reg_store8) or 4 bytes (*dest = 0 on TCP/DCCP error path). When len > 4, registers beyond the first are never written, retaining uninitialized stack data from nft_regs. Bail out if userspace requests too much data when F_PRESENT is set.
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) |
|---|---|---|---|---|---|
| c078ca3b0c5bf82c2b31906c446d6e2ad8ea0783 | affected | git | 8738b1b6d0e639ca1fc0f61516afd3557ac4ecc6 | Unavailable | None listed |
| c078ca3b0c5bf82c2b31906c446d6e2ad8ea0783 | affected | git | 19748967d59c31d24d21d40b728570788310b237 | Unavailable | None listed |
| c078ca3b0c5bf82c2b31906c446d6e2ad8ea0783 | affected | git | 46fc15a044e9938e7ea77786fb37edd2cd74f031 | Unavailable | None listed |
| c078ca3b0c5bf82c2b31906c446d6e2ad8ea0783 | affected | git | cd513e43b4b2bd1de39e2367bc4261c699a8652f | Unavailable | None listed |
| c078ca3b0c5bf82c2b31906c446d6e2ad8ea0783 | affected | git | 67b27434c43b68a97becda98c9f0c8cf6cba2134 | Unavailable | None listed |
| c078ca3b0c5bf82c2b31906c446d6e2ad8ea0783 | affected | git | 78069a6d8bc86c9e036eb82c2af4a19cc1871a53 | Unavailable | None listed |
| c078ca3b0c5bf82c2b31906c446d6e2ad8ea0783 | affected | git | f08fb3d42fd3aad0b7a263da3ac3ebaf0845e265 | Unavailable | None listed |
| c078ca3b0c5bf82c2b31906c446d6e2ad8ea0783 | affected | git | 772cecf198da732faebb5dcfc46d66a505be8495 | 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) |
|---|---|---|---|---|---|
| 4.11 | affected | Unavailable | Unavailable | Unavailable | None listed |
| 0 | unaffected | semver | 4.11 | Unavailable | None listed |
| 5.10.259 | unaffected | semver | Unavailable | 5.10.* | None listed |
| 5.15.210 | unaffected | semver | Unavailable | 5.15.* | None listed |
| 6.1.176 | unaffected | semver | Unavailable | 6.1.* | None listed |
| 6.6.143 | unaffected | semver | Unavailable | 6.6.* | None listed |
| 6.12.94 | unaffected | semver | Unavailable | 6.12.* | None listed |
| 6.18.36 | unaffected | semver | Unavailable | 6.18.* | None listed |
| 7.0.13 | unaffected | semver | Unavailable | 7.0.* | None listed |
| 7.1 | unaffected | original_commit_for_fix | Unavailable | * | None listed |