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Date: Wed, 3 Apr 2024 19:31:20 +0200 From: Greg Kroah-Hartman <gregkh@...uxfoundation.org> To: linux-cve-announce@...r.kernel.org Cc: Greg Kroah-Hartman <gregkh@...uxfoundation.org> Subject: CVE-2024-26753: crypto: virtio/akcipher - Fix stack overflow on memcpy Description =========== In the Linux kernel, the following vulnerability has been resolved: crypto: virtio/akcipher - Fix stack overflow on memcpy sizeof(struct virtio_crypto_akcipher_session_para) is less than sizeof(struct virtio_crypto_op_ctrl_req::u), copying more bytes from stack variable leads stack overflow. Clang reports this issue by commands: make -j CC=clang-14 mrproper >/dev/null 2>&1 make -j O=/tmp/crypto-build CC=clang-14 allmodconfig >/dev/null 2>&1 make -j O=/tmp/crypto-build W=1 CC=clang-14 drivers/crypto/virtio/ virtio_crypto_akcipher_algs.o The Linux kernel CVE team has assigned CVE-2024-26753 to this issue. Affected and fixed versions =========================== Issue introduced in 5.10.209 with commit 1ff57428894f and fixed in 5.10.212 with commit 37077ed16c77 Issue introduced in 5.18 with commit 59ca6c93387d and fixed in 6.1.80 with commit 62f361bfea60 Issue introduced in 5.18 with commit 59ca6c93387d and fixed in 6.6.19 with commit b0365460e945 Issue introduced in 5.18 with commit 59ca6c93387d and fixed in 6.7.7 with commit ef1e47d50324 Issue introduced in 5.18 with commit 59ca6c93387d and fixed in 6.8 with commit c0ec2a712daf 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-2024-26753 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/crypto/virtio/virtio_crypto_akcipher_algs.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/37077ed16c7793e21b005979d33f8a61565b7e86 https://git.kernel.org/stable/c/62f361bfea60c6afc3df09c1ad4152e6507f6f47 https://git.kernel.org/stable/c/b0365460e945e1117b47cf7329d86de752daff63 https://git.kernel.org/stable/c/ef1e47d50324e232d2da484fe55a54274eeb9bc1 https://git.kernel.org/stable/c/c0ec2a712daf133d9996a8a1b7ee2d4996080363
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