CVE-2024-26981 Affecting dlm-kmp-default package, versions <6.4.0-150600.23.7.3
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Test your applications- Snyk ID SNYK-SLES156-DLMKMPDEFAULT-7714551
- published 20 Aug 2024
- disclosed 25 Jun 2024
Introduced: 25 Jun 2024
CVE-2024-26981 Open this link in a new tabHow to fix?
Upgrade SLES:15.6 dlm-kmp-default to version 6.4.0-150600.23.7.3 or higher.
NVD Description
Note: Versions mentioned in the description apply only to the upstream dlm-kmp-default package and not the dlm-kmp-default package as distributed by SLES.
See How to fix? for SLES:15.6 relevant fixed versions and status.
In the Linux kernel, the following vulnerability has been resolved:
nilfs2: fix OOB in nilfs_set_de_type
The size of the nilfs_type_by_mode array in the fs/nilfs2/dir.c file is defined as "S_IFMT >> S_SHIFT", but the nilfs_set_de_type() function, which uses this array, specifies the index to read from the array in the same way as "(mode & S_IFMT) >> S_SHIFT".
static void nilfs_set_de_type(struct nilfs_dir_entry *de, struct inode *inode) { umode_t mode = inode->i_mode;
de->file_type = nilfs_type_by_mode[(mode & S_IFMT)>>S_SHIFT]; // oob
}
However, when the index is determined this way, an out-of-bounds (OOB) error occurs by referring to an index that is 1 larger than the array size when the condition "mode & S_IFMT == S_IFMT" is satisfied. Therefore, a patch to resize the nilfs_type_by_mode array should be applied to prevent OOB errors.
References
- https://www.suse.com/security/cve/CVE-2024-26981.html
- https://bugzilla.suse.com/1223668
- https://git.kernel.org/stable/c/2382eae66b196c31893984a538908c3eb7506ff9
- https://git.kernel.org/stable/c/897ac5306bbeb83e90c437326f7044c79a17c611
- https://git.kernel.org/stable/c/90823f8d9ecca3d5fa6b102c8e464c62f416975f
- https://git.kernel.org/stable/c/bdbe483da21f852c93b22557b146bc4d989260f0
- https://git.kernel.org/stable/c/c4a7dc9523b59b3e73fd522c73e95e072f876b16
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/4EZ6PJW7VOZ224TD7N4JZNU6KV32ZJ53/
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/DAMSOZXJEPUOXW33WZYWCVAY7Z5S7OOY/
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/GCBZZEC7L7KTWWAS2NLJK6SO3IZIL4WW/
- https://git.kernel.org/stable/c/054f29e9ca05be3906544c5f2a2c7321c30a4243
- https://git.kernel.org/stable/c/7061c7efbb9e8f11ce92d6b4646405ea2b0b4de1
- https://git.kernel.org/stable/c/90f43980ea6be4ad903e389be9a27a2a0018f1c8
- https://lists.debian.org/debian-lts-announce/2024/06/msg00017.html
- https://lists.debian.org/debian-lts-announce/2024/06/msg00020.html