5.5

CVE-2026-53227

net: openvswitch: fix possible kfree_skb of ERR_PTR

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.
Daten sind bereitgestellt durch National Vulnerability Database (NVD)
Linux ≫ Linux Kernel Version >= 3.16 < 5.10.259
Linux ≫ Linux Kernel Version >= 5.11 < 5.15.210
Linux ≫ Linux Kernel Version >= 5.16 < 6.1.176
Linux ≫ Linux Kernel Version >= 6.2 < 6.6.143
Linux ≫ Linux Kernel Version >= 6.7 < 6.12.94
Linux ≫ Linux Kernel Version >= 6.13 < 6.18.36
Linux ≫ Linux Kernel Version >= 6.19 < 7.0.13
Linux ≫ Linux Kernel Version7.1 Updaterc1
Linux ≫ Linux Kernel Version7.1 Updaterc2
Linux ≫ Linux Kernel Version7.1 Updaterc3
Linux ≫ Linux Kernel Version7.1 Updaterc4
Linux ≫ Linux Kernel Version7.1 Updaterc5
Linux ≫ Linux Kernel Version7.1 Updaterc6
Linux ≫ Linux Kernel Version7.1 Updaterc7
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Zu dieser CVE wurde keine Warnung gefunden.
EPSS Metriken
Typ Quelle Score Percentile
EPSS FIRST.org 0.14% 0.034
CVSS Metriken
Quelle Base Score Exploit Score Impact Score Vector String
nvd@nist.gov 5.5 1.8 3.6
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
CWE-401 Missing Release of Memory after Effective Lifetime

The product does not sufficiently track and release allocated memory after it has been used, making the memory unavailable for reallocation and reuse.

https://git.kernel.org/stable/c/e248fb2e680deb2bd37bac551b72638fe4938a76
Patch
https://git.kernel.org/stable/c/0bb5b2dc1b90aa7dd1473fc8c4d813a29255ff8d
Patch
https://git.kernel.org/stable/c/971b1b37774f13acc5add0a2843f8598446b8598
Patch
https://git.kernel.org/stable/c/25fdf53698535fe8790237f5a8a9626791429785
Patch
https://git.kernel.org/stable/c/e3d509a1b71396e1452060dbf84a805fd1c3c549
Patch
https://git.kernel.org/stable/c/ecc55aad3390129a87106841f4b68bf3d70c9264
Patch
https://git.kernel.org/stable/c/895d1dd9057cde1687fa0f4286d47ceed0b82997
Patch
https://git.kernel.org/stable/c/ee30dd2909d8b98619f4341c70ec8dc8e155ab02
Patch