CVE-2026-97408
CVE CVE-2026-97408EUVD EUVD-2026-86221Published 2026-09-24T16:03:15.000ZLast changed 2026-09-25T12:43:42.000Z
What the advisory describes
In the Linux kernel, the following vulnerability has been resolved: Bluetooth: L2CAP: validate connectionless PSM length Connectionless L2CAP frames carry a two-byte PSM at the start of the payload. l2cap_recv_frame() currently reads that PSM unconditionally after validating only the outer L2CAP length. A malformed connectionless frame with a zero- or one-byte payload can therefore make the parser read beyond the advertised skb payload and use tailroom bytes as part of the PSM. A VHCI-backed QEMU reproducer injected a one-byte connectionless payload and reached the unchecked read. Reject connectionless frames that cannot contain the PSM before reading or pulling it. This preserves all valid connectionless frames while dropping only structurally incomplete packets.
Source: EUVD (ENISA), in the words of the advisory.
Products the advisory names
These come from the advisory itself, not from any check we performed.
- Linux — Linux patch: 6.18.53; patch: 7.2; patch: 0; patch: 6.12.111; 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <3502ede8aed3c3ee1786d952a11054ac737d1a38; 2.6.12; 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <a40a5f922546b3bd7c094d882b29177db4f2abe0; 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <ae69dca122f6d6046a68cf40153e6e827c77ff5c
The versions shown are the advisory's own. Patchlage compares no version numbers and derives no judgement from them — which version is installed is something a person has to look up.
Carried in the product catalogue
An estate covering these products can be recorded in Patchlage. An advisory about them appears in the next morning's situation report.
- Linux — Linux
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