CVE-2026-53002
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Summary
In the Linux kernel, the following vulnerability has been resolved:
netfilter: conntrack: remove sprintf usage
Replace it with scnprintf, the buffer sizes are expected to be large enough to hold the result, no need for snprintf+overflow check.
Increase buffer size in mangle_content_len() while at it.
BUG: KASAN: stack-out-of-bounds in vsnprintf+0xea5/0x1270 Write of size 1 at addr [..] vsnprintf+0xea5/0x1270 sprintf+0xb1/0xe0 mangle_content_len+0x1ac/0x280 nf_nat_sdp_session+0x1cc/0x240 process_sdp+0x8f8/0xb80 process_invite_request+0x108/0x2b0 process_sip_msg+0x5da/0xf50 sip_help_tcp+0x45e/0x780 nf_confirm+0x34d/0x990 [..]
Affected Software
| Vendor | Product | Version Range | Status |
|---|---|---|---|
| Linux | Linux | 9fafcd7b203229c3f3893a475741afc27e276306 < 2f793ba78470a99f40389b7dc60a81d9f5ad3956 | affected |
| Linux | Linux | 9fafcd7b203229c3f3893a475741afc27e276306 < 6bbf829b4c1b44c941c47dd0d710f1393258f3d5 | affected |
| Linux | Linux | 9fafcd7b203229c3f3893a475741afc27e276306 < ab64e61c9323fa6de21bd20da1ddb29a0fb65d34 | affected |
| Linux | Linux | 9fafcd7b203229c3f3893a475741afc27e276306 < 1c9fb8aeed06790d42cdcd00f6c3ce0b9e926c1e | affected |
| Linux | Linux | 9fafcd7b203229c3f3893a475741afc27e276306 < a8e0a32a23d3f34862af3b4da792ecb3a891a9a3 | affected |
| Linux | Linux | 9fafcd7b203229c3f3893a475741afc27e276306 < 8e3be0d12615a173fe260cd42753ca7a001acbf2 | affected |
| Linux | Linux | 9fafcd7b203229c3f3893a475741afc27e276306 < c08ff52e44945e6ef4ce0790f49ea761b060c45b | affected |
| Linux | Linux | 9fafcd7b203229c3f3893a475741afc27e276306 < 6e7066bdb481a87fe88c4fa563e348c03b2d373d | affected |
| Linux | Linux | 2.6.20 | affected |
| Linux | Linux | 0 < 2.6.20 | unaffected |
| Linux | Linux | 5.10.258 <= 5.10.* | unaffected |
| Linux | Linux | 5.15.209 <= 5.15.* | unaffected |
| Linux | Linux | 6.1.175 <= 6.1.* | unaffected |
| Linux | Linux | 6.6.141 <= 6.6.* | unaffected |
| Linux | Linux | 6.12.91 <= 6.12.* | unaffected |
| Linux | Linux | 6.18.33 <= 6.18.* | unaffected |
| Linux | Linux | 7.0.10 <= 7.0.* | unaffected |
| Linux | Linux | 7.1 <= * | unaffected |
Weaknesses
ADP Enrichment
kernel: netfilter: conntrack: remove sprintf usage
Additional References
- https://access.redhat.com/security/cve/CVE-2026-53002
- https://bugzilla.redhat.com/show_bug.cgi?id=2492329
- https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-53002.json
References
- https://git.kernel.org/stable/c/2f793ba78470a99f40389b7dc60a81d9f5ad3956
- https://git.kernel.org/stable/c/6bbf829b4c1b44c941c47dd0d710f1393258f3d5
- https://git.kernel.org/stable/c/ab64e61c9323fa6de21bd20da1ddb29a0fb65d34
- https://git.kernel.org/stable/c/1c9fb8aeed06790d42cdcd00f6c3ce0b9e926c1e
- https://git.kernel.org/stable/c/a8e0a32a23d3f34862af3b4da792ecb3a891a9a3
- https://git.kernel.org/stable/c/8e3be0d12615a173fe260cd42753ca7a001acbf2
- https://git.kernel.org/stable/c/c08ff52e44945e6ef4ce0790f49ea761b060c45b
- https://git.kernel.org/stable/c/6e7066bdb481a87fe88c4fa563e348c03b2d373d
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