Linux Kernel x25 Fraglen Overflow Mitigated
CVE-2026-31417 Published on April 13, 2026
net/x25: Fix overflow when accumulating packets
In the Linux kernel, the following vulnerability has been resolved:
net/x25: Fix overflow when accumulating packets
Add a check to ensure that `x25_sock.fraglen` does not overflow.
The `fraglen` also needs to be resetted when purging `fragment_queue` in
`x25_clear_queues()`.
Products Associated with CVE-2026-31417
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Affected Versions
Linux:- Version 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 and below 6e568835ea54a3e1d08e310e34f95d434e739477 is affected.
- Version 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 and below 1734bd85c5e0a7a801295b729efb56b009cb8fc3 is affected.
- Version 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 and below 4e2d1bcef78d21247fe8fef13bc7ed95885df2b5 is affected.
- Version 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 and below 8c92969c197b91c134be27dc3afb64ab468853a9 is affected.
- Version 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 and below f953f11ccf4afe6feb635c08145f4240d9a6b544 is affected.
- Version 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 and below a1822cb524e89b4cd2cf0b82e484a2335496a6d9 is affected.
- Version 2.6.12 is affected.
- Before 2.6.12 is unaffected.
- Version 6.1.168, <= 6.1.* is unaffected.
- Version 6.6.134, <= 6.6.* is unaffected.
- Version 6.12.81, <= 6.12.* is unaffected.
- Version 6.18.22, <= 6.18.* is unaffected.
- Version 6.19.12, <= 6.19.* is unaffected.
- Version 7.0, <= * is unaffected.