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Message-ID: <2024051728-CVE-2023-52669-5a58@gregkh> Date: Fri, 17 May 2024 16:01:30 +0200 From: Greg Kroah-Hartman <gregkh@...uxfoundation.org> To: linux-cve-announce@...r.kernel.org Cc: Greg Kroah-Hartman <gregkh@...uxfoundation.org> Subject: CVE-2023-52669: crypto: s390/aes - Fix buffer overread in CTR mode Description =========== In the Linux kernel, the following vulnerability has been resolved: crypto: s390/aes - Fix buffer overread in CTR mode When processing the last block, the s390 ctr code will always read a whole block, even if there isn't a whole block of data left. Fix this by using the actual length left and copy it into a buffer first for processing. The Linux kernel CVE team has assigned CVE-2023-52669 to this issue. Affected and fixed versions =========================== Issue introduced in 3.0 with commit 0200f3ecc196 and fixed in 5.10.210 with commit cd51e26a3b89 Issue introduced in 3.0 with commit 0200f3ecc196 and fixed in 5.15.149 with commit a7f580cdb42e Issue introduced in 3.0 with commit 0200f3ecc196 and fixed in 6.1.76 with commit dbc9a791a70e Issue introduced in 3.0 with commit 0200f3ecc196 and fixed in 6.6.15 with commit d68ac38895e8 Issue introduced in 3.0 with commit 0200f3ecc196 and fixed in 6.7.3 with commit e78f1a43e72d Issue introduced in 3.0 with commit 0200f3ecc196 and fixed in 6.8 with commit d07f951903fa 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-2023-52669 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: arch/s390/crypto/aes_s390.c arch/s390/crypto/paes_s390.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/cd51e26a3b89706beec64f2d8296cfb1c34e0c79 https://git.kernel.org/stable/c/a7f580cdb42ec3d53bbb7c4e4335a98423703285 https://git.kernel.org/stable/c/dbc9a791a70ea47be9f2acf251700fe254a2ab23 https://git.kernel.org/stable/c/d68ac38895e84446848b7647ab9458d54cacba3e https://git.kernel.org/stable/c/e78f1a43e72daf77705ad5b9946de66fc708b874 https://git.kernel.org/stable/c/d07f951903fa9922c375b8ab1ce81b18a0034e3b
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