CVE-2026-74539: Bluetooth: ISO: lock sk in iso_sock_getname
Greg Kroah-Hartman <[email protected]>
| Newsgroups | org.kernel.vger.linux-cve-announce |
|---|---|
| Message-ID | <2026081548-CVE-2026-74539-a4ea@gregkh> |
From: Greg Kroah-Hartman <[email protected]> Description =========== In the Linux kernel, the following vulnerability has been resolved: Bluetooth: ISO: lock sk in iso_sock_getname Accessing iso_pi(sk)->conn requires lock_sock, which is not held here. Fix by adding the lock/release. The Linux kernel CVE team has assigned CVE-2026-74539 to this issue. Affected and fixed versions =========================== Issue introduced in 6.16 with commit 2df108c227b266a9ec9e3fda3828d2ac9662aa33 and fixed in 6.18.44 with commit 72d5bb1d77d7c3330146dc0cfd43f704c64b9594 Issue introduced in 6.16 with commit 2df108c227b266a9ec9e3fda3828d2ac9662aa33 and fixed in 7.1.8 with commit 202670e6602e068558c1fca2df40719ee91a2906 Issue introduced in 6.16 with commit 2df108c227b266a9ec9e3fda3828d2ac9662aa33 and fixed in 7.2-rc6 with commit 89cf154d7c18e6e94a3da83051f3cf2bac317ae2 Please see https://www.kernel.org for a full list of currently supported kernel versions by the kernel community. Unaffected versions might change over time as fixes are backported to older supported kernel versions. The official CVE entry at https://cve.org/CVERecord/?id=CVE-2026-74539 will be updated if fixes are backported, please check that for the most up to date information about this issue. Affected files ============== The file(s) affected by this issue are: net/bluetooth/iso.c Mitigation ========== The Linux kernel CVE team recommends that you update to the latest stable kernel version for this, and many other bugfixes. Individual changes are never tested alone, but rather are part of a larger kernel release. Cherry-picking individual commits is not recommended or supported by the Linux kernel community at all. If however, updating to the latest release is impossible, the individual changes to resolve this issue can be found at these commits: https://git.kernel.org/stable/c/72d5bb1d77d7c3330146dc0cfd43f704c64b9594 https://git.kernel.org/stable/c/202670e6602e068558c1fca2df40719ee91a2906 https://git.kernel.org/stable/c/89cf154d7c18e6e94a3da83051f3cf2bac317ae2