What’s Vulnerable › Vulnerabilities
CVE-2024-27015: netfilter: flowtable: incorrect pppoe tuple
- Severity: medium (CVSS 5.5 v3.1)
- Exploited in the wild: not listed in CISA KEV
- EPSS: 0.2% probability of exploitation in the next 30 days
- Public exploit or detection template: none known
- Published: 2024-05-01 · updated 2026-06-17
Description
In the Linux kernel, the following vulnerability has been resolved: netfilter: flowtable: incorrect pppoe tuple pppoe traffic reaching ingress path does not match the flowtable entry because the pppoe header is expected to be at the network header offset. This bug causes a mismatch in the flow table lookup, so pppoe packets enter the classical forwarding path.
Affected products
- Fedoraproject Fedora: 38, 39, 40
- Linux kernel: from 5.13 before 5.15.157; from 5.16 before 6.1.88; from 6.2 before 6.6.29; from 6.7 before 6.8.8; 6.9-rc1, 6.9-rc2, 6.9-rc3, 6.9-rc4 — fixed in 5.15.157, 6.1.88, 6.6.29, 6.8.8
How to fix
Upgrade to a fixed version: Linux kernel 5.15.157, 6.1.88, 6.6.29, 6.8.8. Check the vendor advisory for mitigations.
References
- https://git.kernel.org/stable/c/4ed82dd368ad883dc4284292937b882f044e625d
- https://git.kernel.org/stable/c/6db5dc7b351b9569940cd1cf445e237c42cd6d27
- https://git.kernel.org/stable/c/e3f078103421642fcd5f05c5e70777feb10f000d
- https://git.kernel.org/stable/c/e719b52d0c56989b0f3475a03a6d64f182c85b56
- https://git.kernel.org/stable/c/f1c3c61701a0b12f4906152c1626a5de580ea3d2
- https://git.kernel.org/stable/c/4ed82dd368ad883dc4284292937b882f044e625d
- https://git.kernel.org/stable/c/6db5dc7b351b9569940cd1cf445e237c42cd6d27
- https://git.kernel.org/stable/c/e3f078103421642fcd5f05c5e70777feb10f000d
- https://git.kernel.org/stable/c/e719b52d0c56989b0f3475a03a6d64f182c85b56
- https://git.kernel.org/stable/c/f1c3c61701a0b12f4906152c1626a5de580ea3d2
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/4EZ6PJW7VOZ224TD7N4JZNU6KV32ZJ53/
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/DAMSOZXJEPUOXW33WZYWCVAY7Z5S7OOY/
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