CVE-2026-64066: netfs: Fix netfs_read_to_pagecache() to pause on subreq failure
Greg Kroah-Hartman <[email protected]>
| Newsgroups | org.kernel.vger.linux-cve-announce |
|---|---|
| Message-ID | <2026071912-CVE-2026-64066-9d98@gregkh> |
From: Greg Kroah-Hartman <[email protected]> Description =========== In the Linux kernel, the following vulnerability has been resolved: netfs: Fix netfs_read_to_pagecache() to pause on subreq failure Fix netfs_read_to_pagecache() so that it pauses the generation of new subrequests if an already-issued subrequest fails. The Linux kernel CVE team has assigned CVE-2026-64066 to this issue. Affected and fixed versions =========================== Issue introduced in 6.12 with commit ee4cdf7ba857a894ad1650d6ab77669cbbfa329e and fixed in 6.18.34 with commit 884c4c4f35e577aba6a0593c80cbea9ca5e6e2b8 Issue introduced in 6.12 with commit ee4cdf7ba857a894ad1650d6ab77669cbbfa329e and fixed in 7.0.11 with commit 0256e79ce42101ad036edd4205bccca621ea0927 Issue introduced in 6.12 with commit ee4cdf7ba857a894ad1650d6ab77669cbbfa329e and fixed in 7.1 with commit 8a8c0cfdf4658fc5b295b7fc87be56e0d76741f4 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-2026-64066 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: fs/netfs/buffered_read.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/884c4c4f35e577aba6a0593c80cbea9ca5e6e2b8 https://git.kernel.org/stable/c/0256e79ce42101ad036edd4205bccca621ea0927 https://git.kernel.org/stable/c/8a8c0cfdf4658fc5b295b7fc87be56e0d76741f4