CVE-2026-64171: i2c: tegra: fix pm_runtime leak on mutex_lock failure
Greg Kroah-Hartman <[email protected]>
| Newsgroups | org.kernel.vger.linux-cve-announce |
|---|---|
| Message-ID | <2026071936-CVE-2026-64171-5160@gregkh> |
From: Greg Kroah-Hartman <[email protected]> Description =========== In the Linux kernel, the following vulnerability has been resolved: i2c: tegra: fix pm_runtime leak on mutex_lock failure If tegra_i2c_mutex_lock() fails, the function returns without calling pm_runtime_put(), leaking the runtime PM reference acquired by the preceding pm_runtime_get_sync(). This prevents the device from ever entering runtime suspend. Add the missing pm_runtime_put() before returning on lock failure. The Linux kernel CVE team has assigned CVE-2026-64171 to this issue. Affected and fixed versions =========================== Issue introduced in 7.0 with commit 6077cfd716fbd4d1f2a3702e49ae8bf65c072685 and fixed in 7.0.11 with commit 8f7ed203b39004c02479a9156089d87d1ac2c1d8 Issue introduced in 7.0 with commit 6077cfd716fbd4d1f2a3702e49ae8bf65c072685 and fixed in 7.1 with commit 57cf4e8d6a57dc2ef5810f4852a23ba4c71b74bb 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-2026-64171 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: drivers/i2c/busses/i2c-tegra.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/8f7ed203b39004c02479a9156089d87d1ac2c1d8 https://git.kernel.org/stable/c/57cf4e8d6a57dc2ef5810f4852a23ba4c71b74bb