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Date: Wed, 1 May 2024 14:50:08 +0200 From: Greg Kroah-Hartman <gregkh@...uxfoundation.org> To: linux-cve-announce@...r.kernel.org Cc: Greg Kroah-Hartman <gregkh@...uxfoundation.org> Subject: CVE-2024-27025: nbd: null check for nla_nest_start Description =========== In the Linux kernel, the following vulnerability has been resolved: nbd: null check for nla_nest_start nla_nest_start() may fail and return NULL. Insert a check and set errno based on other call sites within the same source code. The Linux kernel CVE team has assigned CVE-2024-27025 to this issue. Affected and fixed versions =========================== Issue introduced in 4.12 with commit 47d902b90a32 and fixed in 5.4.273 with commit 44214d744be3 Issue introduced in 4.12 with commit 47d902b90a32 and fixed in 5.10.214 with commit 4af837db0fd3 Issue introduced in 4.12 with commit 47d902b90a32 and fixed in 5.15.153 with commit 98e60b538e66 Issue introduced in 4.12 with commit 47d902b90a32 and fixed in 6.1.83 with commit 96436365e5d8 Issue introduced in 4.12 with commit 47d902b90a32 and fixed in 6.6.23 with commit b7f5aed55829 Issue introduced in 4.12 with commit 47d902b90a32 and fixed in 6.7.11 with commit e803040b368d Issue introduced in 4.12 with commit 47d902b90a32 and fixed in 6.8.2 with commit ba6a9970ce9e Issue introduced in 4.12 with commit 47d902b90a32 and fixed in 6.9-rc1 with commit 31edf4bbe0ba 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-2024-27025 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/block/nbd.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/44214d744be32a4769faebba764510888f1eb19e https://git.kernel.org/stable/c/4af837db0fd3679fabc7b7758397090b0c06dced https://git.kernel.org/stable/c/98e60b538e66c90b9a856828c71d4e975ebfa797 https://git.kernel.org/stable/c/96436365e5d80d0106ea785a4f80a58e7c9edff8 https://git.kernel.org/stable/c/b7f5aed55829f376e4f7e5ea5b80ccdcb023e983 https://git.kernel.org/stable/c/e803040b368d046434fbc8a91945c690332c4fcf https://git.kernel.org/stable/c/ba6a9970ce9e284cbc04099361c58731e308596a https://git.kernel.org/stable/c/31edf4bbe0ba27fd03ac7d87eb2ee3d2a231af6d
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