Memory Leak Affecting kernel-obs-build package, versions <6.4.0-150600.23.50.1
Threat Intelligence
The probability is the direct output of the EPSS model, and conveys an overall sense of the threat of exploitation in the wild. The percentile measures the EPSS probability relative to all known EPSS scores. Note: This data is updated daily, relying on the latest available EPSS model version. Check out the EPSS documentation for more details.
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Test your applications- Snyk IDSNYK-SLES156-KERNELOBSBUILD-10227070
- published22 May 2025
- disclosed21 May 2025
Introduced: 21 May 2025
NewCVE-2025-21981 (opens in a new tab)How to fix?
Upgrade SLES:15.6 kernel-obs-build to version 6.4.0-150600.23.50.1 or higher.
NVD Description
Note: Versions mentioned in the description apply only to the upstream kernel-obs-build package and not the kernel-obs-build 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:
ice: fix memory leak in aRFS after reset
Fix aRFS (accelerated Receive Flow Steering) structures memory leak by adding a checker to verify if aRFS memory is already allocated while configuring VSI. aRFS objects are allocated in two cases:
- as part of VSI initialization (at probe), and
- as part of reset handling
However, VSI reconfiguration executed during reset involves memory allocation one more time, without prior releasing already allocated resources. This led to the memory leak with the following signature:
[root@os-delivery ~]# cat /sys/kernel/debug/kmemleak unreferenced object 0xff3c1ca7252e6000 (size 8192): comm "kworker/0:0", pid 8, jiffies 4296833052 hex dump (first 32 bytes): 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................ 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................ backtrace (crc 0): [<ffffffff991ec485>] __kmalloc_cache_noprof+0x275/0x340 [<ffffffffc0a6e06a>] ice_init_arfs+0x3a/0xe0 [ice] [<ffffffffc09f1027>] ice_vsi_cfg_def+0x607/0x850 [ice] [<ffffffffc09f244b>] ice_vsi_setup+0x5b/0x130 [ice] [<ffffffffc09c2131>] ice_init+0x1c1/0x460 [ice] [<ffffffffc09c64af>] ice_probe+0x2af/0x520 [ice] [<ffffffff994fbcd3>] local_pci_probe+0x43/0xa0 [<ffffffff98f07103>] work_for_cpu_fn+0x13/0x20 [<ffffffff98f0b6d9>] process_one_work+0x179/0x390 [<ffffffff98f0c1e9>] worker_thread+0x239/0x340 [<ffffffff98f14abc>] kthread+0xcc/0x100 [<ffffffff98e45a6d>] ret_from_fork+0x2d/0x50 [<ffffffff98e083ba>] ret_from_fork_asm+0x1a/0x30 ...
References
- https://www.suse.com/security/cve/CVE-2025-21981.html
- https://bugzilla.suse.com/1240612
- https://git.kernel.org/stable/c/23d97f18901ef5e4e264e3b1777fe65c760186b5
- https://git.kernel.org/stable/c/3b27e6e10a32589fcd293b8933ab6de9387a460e
- https://git.kernel.org/stable/c/5d30d256661fc11b6e73fac6c3783a702e1006a3
- https://git.kernel.org/stable/c/78f3d64b30210c0e521c59357431aca14024cb79
- https://git.kernel.org/stable/c/e6902101f34f098af59b0d1d8cf90c4124c02c6a
- https://git.kernel.org/stable/c/ef2bc94059836a115430a6ad9d2838b0b34dc8f5
- https://git.kernel.org/stable/c/fcbacc47d16306c87ad1b820b7a575f6e9eae58b