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Message-ID: <2025091628-CVE-2023-53299-cd27@gregkh> Date: Tue, 16 Sep 2025 10:11:49 +0200 From: Greg Kroah-Hartman <gregkh@...uxfoundation.org> To: linux-cve-announce@...r.kernel.org Cc: Greg Kroah-Hartman <gregkh@...nel.org> Subject: CVE-2023-53299: md/raid10: fix leak of 'r10bio->remaining' for recovery From: Greg Kroah-Hartman <gregkh@...nel.org> Description =========== In the Linux kernel, the following vulnerability has been resolved: md/raid10: fix leak of 'r10bio->remaining' for recovery raid10_sync_request() will add 'r10bio->remaining' for both rdev and replacement rdev. However, if the read io fails, recovery_request_write() returns without issuing the write io, in this case, end_sync_request() is only called once and 'remaining' is leaked, cause an io hang. Fix the problem by decreasing 'remaining' according to if 'bio' and 'repl_bio' is valid. The Linux kernel CVE team has assigned CVE-2023-53299 to this issue. Affected and fixed versions =========================== Issue introduced in 3.3 with commit 24afd80d99f80a79d8824d2805114b8b067e9823 and fixed in 4.14.315 with commit cb827ed2bb34480dc102146d3a1f89fdbcafc028 Issue introduced in 3.3 with commit 24afd80d99f80a79d8824d2805114b8b067e9823 and fixed in 4.19.283 with commit 1d2c6c6e37fe5de11fd01a82badf03390e12df7a Issue introduced in 3.3 with commit 24afd80d99f80a79d8824d2805114b8b067e9823 and fixed in 5.4.243 with commit 8c5d5d7ffd1e76734811b8ea5417cf0432b9952c Issue introduced in 3.3 with commit 24afd80d99f80a79d8824d2805114b8b067e9823 and fixed in 5.10.180 with commit 1697fb124c6d6c5237e9cbd78890310154738084 Issue introduced in 3.3 with commit 24afd80d99f80a79d8824d2805114b8b067e9823 and fixed in 5.15.111 with commit 8d09065802c53cc938d162b62f6c4150b392c90e Issue introduced in 3.3 with commit 24afd80d99f80a79d8824d2805114b8b067e9823 and fixed in 6.1.28 with commit 11141630f03efffdfe260b3582b2d93d38171b97 Issue introduced in 3.3 with commit 24afd80d99f80a79d8824d2805114b8b067e9823 and fixed in 6.2.15 with commit 3481dec5ecbbbbe44ab23e22c2b14bd65c644ec6 Issue introduced in 3.3 with commit 24afd80d99f80a79d8824d2805114b8b067e9823 and fixed in 6.3.2 with commit 4f82e7e07cdaf2947d71968e3d6b73370a217093 Issue introduced in 3.3 with commit 24afd80d99f80a79d8824d2805114b8b067e9823 and fixed in 6.4 with commit 26208a7cffd0c7cbf14237ccd20c7270b3ffeb7e 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-2023-53299 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/md/raid10.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/cb827ed2bb34480dc102146d3a1f89fdbcafc028 https://git.kernel.org/stable/c/1d2c6c6e37fe5de11fd01a82badf03390e12df7a https://git.kernel.org/stable/c/8c5d5d7ffd1e76734811b8ea5417cf0432b9952c https://git.kernel.org/stable/c/1697fb124c6d6c5237e9cbd78890310154738084 https://git.kernel.org/stable/c/8d09065802c53cc938d162b62f6c4150b392c90e https://git.kernel.org/stable/c/11141630f03efffdfe260b3582b2d93d38171b97 https://git.kernel.org/stable/c/3481dec5ecbbbbe44ab23e22c2b14bd65c644ec6 https://git.kernel.org/stable/c/4f82e7e07cdaf2947d71968e3d6b73370a217093 https://git.kernel.org/stable/c/26208a7cffd0c7cbf14237ccd20c7270b3ffeb7e
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