CVE-2024-27395
In the Linux kernel, the following vulnerability has been resolved: net: openvswitch: Fix Use-After-Free in ovs_ct_exit Since kfree_rcu, which is called in the hlist_for_each_entry_rcu traversal of ovs_ct_limit_exit, is not part of the RCU read critical…
Does this matter?
High impact if exploited, but EPSS currently rates exploitation as unlikely (0.24%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.
Description
In the Linux kernel, the following vulnerability has been resolved: net: openvswitch: Fix Use-After-Free in ovs_ct_exit Since kfree_rcu, which is called in the hlist_for_each_entry_rcu traversal of ovs_ct_limit_exit, is not part of the RCU read critical section, it is possible that the RCU grace period will pass during the traversal and the key will be free. To prevent this, it should be changed to hlist_for_each_entry_safe.
- CVSS 3.1
- 7.8 HIGHCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
- EPSS
- 0.24% probability · 16th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-416
- Affected
- linux/linux kernel · debian/debian linux
- Source
- 416baaa9-dc9f-4396-8d5f-8c081fb06d67
References
- https://git.kernel.org/stable/c/2db9a8c0a01fa1c762c1e61a13c212c492752994Patch
- https://git.kernel.org/stable/c/35880c3fa6f8fe281a19975d2992644588ca33d3Patch
- https://git.kernel.org/stable/c/589523cf0b384164e445dd5db8d5b1bf97982424Patch
- https://git.kernel.org/stable/c/5ea7b72d4fac2fdbc0425cd8f2ea33abe95235b2Patch
- https://git.kernel.org/stable/c/9048616553c65e750d43846f225843ed745ec0d4Patch
- https://git.kernel.org/stable/c/bca6fa2d9a9f560e6b89fd5190b05cc2f5d422c1Patch
- https://git.kernel.org/stable/c/eaa5e164a2110d2fb9e16c8a29e4501882235137Patch
- https://git.kernel.org/stable/c/edee0758747d7c219e29db9ed1d4eb33e8d32865Patch
- https://git.kernel.org/stable/c/2db9a8c0a01fa1c762c1e61a13c212c492752994Patch
- https://git.kernel.org/stable/c/35880c3fa6f8fe281a19975d2992644588ca33d3Patch
- https://git.kernel.org/stable/c/589523cf0b384164e445dd5db8d5b1bf97982424Patch
- https://git.kernel.org/stable/c/5ea7b72d4fac2fdbc0425cd8f2ea33abe95235b2Patch
- https://git.kernel.org/stable/c/9048616553c65e750d43846f225843ed745ec0d4Patch
- https://git.kernel.org/stable/c/bca6fa2d9a9f560e6b89fd5190b05cc2f5d422c1Patch
- https://git.kernel.org/stable/c/eaa5e164a2110d2fb9e16c8a29e4501882235137Patch
- https://git.kernel.org/stable/c/edee0758747d7c219e29db9ed1d4eb33e8d32865Patch
- https://lists.debian.org/debian-lts-announce/2024/06/msg00017.htmlMailing List
- https://lists.debian.org/debian-lts-announce/2024/06/msg00020.htmlMailing List
- 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.