Description (CNA)
In the Linux kernel, the following vulnerability has been resolved: xfrm6: fix out-of-bounds write in xfrm6_input_addr() when secpath is full The depth check in xfrm6_input_addr() is off by one: if (1 + sp->len == XFRM_MAX_DEPTH) goto drop; ... sp->xvec[sp->len++] = x; xfrm_input() can leave sp->len == XFRM_MAX_DEPTH, and the transport-mode receive path re-enters IPv6 input via xfrm_trans_reinject() with that secpath preserved. If the inner packet carries a destination-options HAO option or a type-2 routing header, xfrm6_input_addr() is called with sp->len == XFRM_MAX_DEPTH; the check (1 + 6 == 6) is false, so sp->xvec[sp->len++] writes one slot past the 6-element xvec[]. The write stays within the sec_path allocation (invisible to KASAN); UBSAN_BOUNDS flags it and panics under panic_on_warn. Use "sp->len >= XFRM_MAX_DEPTH", matching xfrm_input(). This also restores one chain level the old check rejected at sp->len == 5. UBSAN: array-index-out-of-bounds in net/ipv6/xfrm6_input.c:309:10 index 6 is out of range for type 'xfrm_state *[6]'
Affected (CNA)
| Vendor / product | Versions |
|---|---|
| Linux / Linux | affected 9473e1f631de339c50bde1e3bd09e1045fe90fd5 before 91fc387f63c00ddfb5221127a17bac97549a8343; affected 9473e1f631de339c50bde1e3bd09e1045fe90fd5 before 68e8737fe8e72f085c608cff322b3d2de8340af1; affected 9473e1f631de339c50bde1e3bd09e1045fe90fd5 before 8fe2c53fb81f5ad5be43af2ad09583f7c78b4b77; affected 9473e1f631de339c50bde1e3bd09e1045fe90fd5 before bdcda866c89f9a8b1acdabf02d26cde9fbe501d8; affected 9473e1f631de339c50bde1e3bd09e1045fe90fd5 before 48996649222e95008cdb98cd58579e3fc8e5ee06; affected 9473e1f631de339c50bde1e3bd09e1045fe90fd5 before 0f679e0523ddfff3fb554336ceb874b0e51e9cd3; affected 9473e1f631de339c50bde1e3bd09e1045fe90fd5 before 5f35a29a5eed3d80befd32050843ac88dea3d61a; affected 9473e1f631de339c50bde1e3bd09e1045fe90fd5 before 5d9e3bf34fec9a5d237e4b7cef4a707bc2e091bc |
| Linux / Linux | affected 2.6.25; unaffected 0 before 2.6.25; unaffected 5.10.270 through 5.10.*; unaffected 5.15.221 through 5.15.*; unaffected 6.1.188 through 6.1.*; unaffected 6.6.157 through 6.6.*; unaffected 6.12.110 through 6.12.*; unaffected 6.18.52 through 6.18.*; unaffected 7.2.6 through 7.2.*; unaffected 7.3 through * |
CWE
No CWE identifiers supplied.
References
- https://git.kernel.org/stable/c/91fc387f63c00ddfb5221127a17bac97549a8343
- https://git.kernel.org/stable/c/68e8737fe8e72f085c608cff322b3d2de8340af1
- https://git.kernel.org/stable/c/8fe2c53fb81f5ad5be43af2ad09583f7c78b4b77
- https://git.kernel.org/stable/c/bdcda866c89f9a8b1acdabf02d26cde9fbe501d8
- https://git.kernel.org/stable/c/48996649222e95008cdb98cd58579e3fc8e5ee06
- https://git.kernel.org/stable/c/0f679e0523ddfff3fb554336ceb874b0e51e9cd3
- https://git.kernel.org/stable/c/5f35a29a5eed3d80befd32050843ac88dea3d61a
- https://git.kernel.org/stable/c/5d9e3bf34fec9a5d237e4b7cef4a707bc2e091bc