CVE-2026-53227

CVE-2026-53227: vulnerability in Linux

net: openvswitch: fix possible kfree_skb of ERR_PTR

Published

3Vexday Risk Score

No sign of exploitation. No public exploitation artifact known so far.

ssvc Trackepss 0.1%
exploitation probability
0.1%top 98% of all CVEs
observed exploitation
nono source reports it
In the Linux kernel, the following vulnerability has been resolved: net: openvswitch: fix possible kfree_skb of ERR_PTR After the patch in the "Fixes" tag, the allocation of the "reply" skb can happen either before or after locking the ovs_mutex. However, error cleanups still follow the classical reversed order, assuming "reply" is allocated before locking: it is freed after unlocking. If "reply" allocation happens after locking the mutex and it fails, "reply" is left with an ERR_PTR, and execution jumps to the correspondent cleanup stage which will try to free an invalid pointer. Fix this by setting the pointer to NULL after having saved its error value.
Affected products
Linux · Linux
Related CVEs — Linux

In the same product, most dangerous first.

CVE-2024-53197HIGHALSA: usb-audio: Fix potential out-of-bound accesses for Extigy and Mbox devicesEPSS 4.1%KEVCVE-2026-31431HIGHcrypto: algif_aead - Revert to operating out-of-placeEPSS 3.4%KEVCVE-2024-53104HIGHmedia: uvcvideo: Skip parsing frames of type UVC_VS_UNDEFINED in uvc_parse_formatEPSS 3.4%KEVCVE-2025-39682CRITICALtls: fix handling of zero-length records on the rx_listEPSS 2.9%KEVCVE-2024-36971HIGHnet: fix __dst_negative_advice() raceEPSS 2.7%KEVCVE-2024-53150HIGHALSA: usb-audio: Fix out of bounds reads when finding clock sourcesEPSS 1.4%KEV
References
https://git.kernel.org/stable/c/0bb5b2dc1b90aa7dd1473fc8c4d813a29255ff8dhttps://git.kernel.org/stable/c/25fdf53698535fe8790237f5a8a9626791429785https://git.kernel.org/stable/c/895d1dd9057cde1687fa0f4286d47ceed0b82997https://git.kernel.org/stable/c/971b1b37774f13acc5add0a2843f8598446b8598https://git.kernel.org/stable/c/e248fb2e680deb2bd37bac551b72638fe4938a76https://git.kernel.org/stable/c/e3d509a1b71396e1452060dbf84a805fd1c3c549https://git.kernel.org/stable/c/ecc55aad3390129a87106841f4b68bf3d70c9264https://git.kernel.org/stable/c/ee30dd2909d8b98619f4341c70ec8dc8e155ab02