Description (CNA)
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.
Affected (CNA)
| Vendor / product | Versions |
|---|---|
| Linux / Linux | affected c078ca3b0c5bf82c2b31906c446d6e2ad8ea0783 before 8738b1b6d0e639ca1fc0f61516afd3557ac4ecc6; affected c078ca3b0c5bf82c2b31906c446d6e2ad8ea0783 before 19748967d59c31d24d21d40b728570788310b237; affected c078ca3b0c5bf82c2b31906c446d6e2ad8ea0783 before 46fc15a044e9938e7ea77786fb37edd2cd74f031; affected c078ca3b0c5bf82c2b31906c446d6e2ad8ea0783 before cd513e43b4b2bd1de39e2367bc4261c699a8652f; affected c078ca3b0c5bf82c2b31906c446d6e2ad8ea0783 before 67b27434c43b68a97becda98c9f0c8cf6cba2134; affected c078ca3b0c5bf82c2b31906c446d6e2ad8ea0783 before 78069a6d8bc86c9e036eb82c2af4a19cc1871a53; affected c078ca3b0c5bf82c2b31906c446d6e2ad8ea0783 before f08fb3d42fd3aad0b7a263da3ac3ebaf0845e265; affected c078ca3b0c5bf82c2b31906c446d6e2ad8ea0783 before 772cecf198da732faebb5dcfc46d66a505be8495 |
| Linux / Linux | affected 4.11; unaffected 0 before 4.11; unaffected 5.10.259 through 5.10.*; unaffected 5.15.210 through 5.15.*; unaffected 6.1.176 through 6.1.*; unaffected 6.6.143 through 6.6.*; unaffected 6.12.94 through 6.12.*; unaffected 6.18.36 through 6.18.*; unaffected 7.0.13 through 7.0.*; unaffected 7.1 through * |
CWE
No CWE identifiers supplied.
References
- https://git.kernel.org/stable/c/8738b1b6d0e639ca1fc0f61516afd3557ac4ecc6
- https://git.kernel.org/stable/c/19748967d59c31d24d21d40b728570788310b237
- https://git.kernel.org/stable/c/46fc15a044e9938e7ea77786fb37edd2cd74f031
- https://git.kernel.org/stable/c/cd513e43b4b2bd1de39e2367bc4261c699a8652f
- https://git.kernel.org/stable/c/67b27434c43b68a97becda98c9f0c8cf6cba2134
- https://git.kernel.org/stable/c/78069a6d8bc86c9e036eb82c2af4a19cc1871a53
- https://git.kernel.org/stable/c/f08fb3d42fd3aad0b7a263da3ac3ebaf0845e265
- https://git.kernel.org/stable/c/772cecf198da732faebb5dcfc46d66a505be8495
ADP enrichment
No English description supplied.