CVE-2026-22987net/sched: act_api: avoid dereferencing ERR_PTR in tcf_idrinfo_destroy
Updated under an hour ago ()
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No exploitation reported and no EPSS estimate yet.
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In the Linux kernel, the following vulnerability has been resolved: net/sched: act_api: avoid dereferencing ERR_PTR in tcf_idrinfo_destroy syzbot reported a crash in tc_act_in_hw() during netns teardown where tcf_idrinfo_destroy() passed an ERR_PTR(-EBUSY) value as a tc_action pointer, leading to an invalid dereference. Guard against ERR_PTR entries when iterating the action IDR so teardown does not call tc_act_in_hw() on an error pointer.
- CVSS
- 5.5 MEDIUM (v3.1, NVD)CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
- Weakness (CWE)
- Not given
- Known exploited
- Not in CISA's KEV catalog
- EPSS (exploitation in the next 30 days)
- Not loaded for this CVE
- Assigned by
- Linux
- NVD analysis
- Analyzed
- Record last updated
- May 11, 2026
- First seen by InfoSec Signals
- Oct 9, 2026
Affected products
Linux Linux linux:linux (from the name) | from 84a7d6797e6a03705e6b48c613fa424662049d87 before 67550a1130b647bb0d093c9c0a810c69aa6a30a8; from 84a7d6797e6a03705e6b48c613fa424662049d87 before adb25a46dc0a43173f5ea5f5f58fc8ba28970c7c | CNA record |
linux linux_kernel linux:linux_kernel | from 6.17 before 6.18.6; 6.19; 6.19; 6.19; 6.19 | NVD |
References
- https://git.kernel.org/stable/c/67550a1130b647bb0d093c9c0a810c69aa6a30a8patch
- https://git.kernel.org/stable/c/adb25a46dc0a43173f5ea5f5f58fc8ba28970c7cpatch
The CVE record on cve.org NVD's entry
The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.