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Message-ID: <2024053039-CVE-2024-36947-e69f@gregkh> Date: Thu, 30 May 2024 17:35:44 +0200 From: Greg Kroah-Hartman <gregkh@...uxfoundation.org> To: linux-cve-announce@...r.kernel.org Cc: Greg Kroah-Hartman <gregkh@...uxfoundation.org>, Al Viro <viro@...iv.linux.org.uk> Subject: CVE-2024-36947: qibfs: fix dentry leak Description =========== In the Linux kernel, the following vulnerability has been resolved: qibfs: fix dentry leak simple_recursive_removal() drops the pinning references to all positives in subtree. For the cases when its argument has been kept alive by the pinning alone that's exactly the right thing to do, but here the argument comes from dcache lookup, that needs to be balanced by explicit dput(). Fucked-up-by: Al Viro <viro@...iv.linux.org.uk> The Linux kernel CVE team has assigned CVE-2024-36947 to this issue. Affected and fixed versions =========================== Issue introduced in 5.13 with commit e41d23781859 and fixed in 5.15.159 with commit 24dd9b08df71 Issue introduced in 5.13 with commit e41d23781859 and fixed in 6.1.91 with commit bd8f78c71def Issue introduced in 5.13 with commit e41d23781859 and fixed in 6.6.31 with commit db71ca93259d Issue introduced in 5.13 with commit e41d23781859 and fixed in 6.8.10 with commit 02ee394a5d89 Issue introduced in 5.13 with commit e41d23781859 and fixed in 6.9 with commit aa23317d0268 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-2024-36947 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/infiniband/hw/qib/qib_fs.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/24dd9b08df718f20ccf2dd1519909fefd8c233ee https://git.kernel.org/stable/c/bd8f78c71defbcb7a9ed331e7f287507df972b00 https://git.kernel.org/stable/c/db71ca93259dd1078bcfea3afafde2143cfc2da7 https://git.kernel.org/stable/c/02ee394a5d899d9bd2f0759382e9481cab6166f8 https://git.kernel.org/stable/c/aa23317d0268b309bb3f0801ddd0d61813ff5afb
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