CVE-2024-26993
In the Linux kernel, the following vulnerability has been resolved: fs: sysfs: Fix reference leak in sysfs_break_active_protection() The sysfs_break_active_protection() routine has an obvious reference leak in its error path.
Does this matter?
Lower severity and a low EPSS score (0.27%). Track it; it rarely justifies an emergency change on its own.
Description
In the Linux kernel, the following vulnerability has been resolved: fs: sysfs: Fix reference leak in sysfs_break_active_protection() The sysfs_break_active_protection() routine has an obvious reference leak in its error path. If the call to kernfs_find_and_get() fails then kn will be NULL, so the companion sysfs_unbreak_active_protection() routine won't get called (and would only cause an access violation by trying to dereference kn->parent if it was called). As a result, the reference to kobj acquired at the start of the function will never be released. Fix the leak by adding an explicit kobject_put() call when kn is NULL.
- CVSS 3.1
- 5.5 MEDIUMCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
- EPSS
- 0.27% probability · 19th percentile
- CISA KEV
- Not listed
- Affected
- linux/linux kernel
- Source
- 416baaa9-dc9f-4396-8d5f-8c081fb06d67
References
- https://git.kernel.org/stable/c/43f00210cb257bcb0387e8caeb4b46375d67f30cPatch
- https://git.kernel.org/stable/c/57baab0f376bec8f54b0fe6beb8f77a57c228063Patch
- https://git.kernel.org/stable/c/5d43e072285e81b0b63cee7189b3357c7768a43bPatch
- https://git.kernel.org/stable/c/84bd4c2ae9c3d0a7d3a5c032ea7efff17af17e17Patch
- https://git.kernel.org/stable/c/a4c99b57d43bab45225ba92d574a8683f9edc8e4Patch
- https://git.kernel.org/stable/c/a90bca2228c0646fc29a72689d308e5fe03e6d78Patch
- https://git.kernel.org/stable/c/ac107356aabc362aaeb77463e814fc067a5d3957Patch
- https://git.kernel.org/stable/c/f28bba37fe244889b81bb5c508d3f6e5c6e342c5Patch
- https://git.kernel.org/stable/c/43f00210cb257bcb0387e8caeb4b46375d67f30cPatch
- https://git.kernel.org/stable/c/57baab0f376bec8f54b0fe6beb8f77a57c228063Patch
- https://git.kernel.org/stable/c/5d43e072285e81b0b63cee7189b3357c7768a43bPatch
- https://git.kernel.org/stable/c/84bd4c2ae9c3d0a7d3a5c032ea7efff17af17e17Patch
- https://git.kernel.org/stable/c/a4c99b57d43bab45225ba92d574a8683f9edc8e4Patch
- https://git.kernel.org/stable/c/a90bca2228c0646fc29a72689d308e5fe03e6d78Patch
- https://git.kernel.org/stable/c/ac107356aabc362aaeb77463e814fc067a5d3957Patch
- https://git.kernel.org/stable/c/f28bba37fe244889b81bb5c508d3f6e5c6e342c5Patch
- https://lists.debian.org/debian-lts-announce/2024/06/msg00017.htmlMailing List, Third Party Advisory
- https://lists.debian.org/debian-lts-announce/2024/06/msg00020.htmlMailing List, Third Party Advisory
- 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://cert-portal.siemens.com/productcert/html/ssa-265688.html
- https://cert-portal.siemens.com/productcert/html/ssa-613116.html
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.