CVE-2024-26665
In the Linux kernel, the following vulnerability has been resolved: tunnels: fix out of bounds access when building IPv6 PMTU error If the ICMPv6 error is built from a non-linear skb we get the following splat, BUG: KASAN: slab-out-of-bounds in…
Does this matter?
High impact if exploited, but EPSS currently rates exploitation as unlikely (0.68%). 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: tunnels: fix out of bounds access when building IPv6 PMTU error If the ICMPv6 error is built from a non-linear skb we get the following splat, BUG: KASAN: slab-out-of-bounds in do_csum+0x220/0x240 Read of size 4 at addr ffff88811d402c80 by task netperf/820 CPU: 0 PID: 820 Comm: netperf Not tainted 6.8.0-rc1+ #543 ... kasan_report+0xd8/0x110 do_csum+0x220/0x240 csum_partial+0xc/0x20 skb_tunnel_check_pmtu+0xeb9/0x3280 vxlan_xmit_one+0x14c2/0x4080 vxlan_xmit+0xf61/0x5c00 dev_hard_start_xmit+0xfb/0x510 __dev_queue_xmit+0x7cd/0x32a0 br_dev_queue_push_xmit+0x39d/0x6a0 Use skb_checksum instead of csum_partial who cannot deal with non-linear SKBs.
- CVSS 3.1
- 7.1 HIGHCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H
- EPSS
- 0.68% probability · 50th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-125
- Affected
- linux/linux kernel · debian/debian linux
- Source
- 416baaa9-dc9f-4396-8d5f-8c081fb06d67
References
- https://git.kernel.org/stable/c/510c869ffa4068c5f19ff4df51d1e2f3a30aaac1Patch
- https://git.kernel.org/stable/c/7dc9feb8b1705cf00de20563b6bc4831f4c99dabPatch
- https://git.kernel.org/stable/c/d75abeec401f8c86b470e7028a13fcdc87e5dd06Patch
- https://git.kernel.org/stable/c/d964dd1bc1452594b4207d9229c157d9386e5d8aPatch
- https://git.kernel.org/stable/c/e37cde7a5716466ff2a76f7f27f0a29b05b9a732Patch
- https://git.kernel.org/stable/c/e77bf828f1ca1c47fcff58bdc26b60a9d3dfbe1dPatch
- https://git.kernel.org/stable/c/510c869ffa4068c5f19ff4df51d1e2f3a30aaac1Patch
- https://git.kernel.org/stable/c/7dc9feb8b1705cf00de20563b6bc4831f4c99dabPatch
- https://git.kernel.org/stable/c/d75abeec401f8c86b470e7028a13fcdc87e5dd06Patch
- https://git.kernel.org/stable/c/d964dd1bc1452594b4207d9229c157d9386e5d8aPatch
- https://git.kernel.org/stable/c/e37cde7a5716466ff2a76f7f27f0a29b05b9a732Patch
- https://git.kernel.org/stable/c/e77bf828f1ca1c47fcff58bdc26b60a9d3dfbe1dPatch
- https://lists.debian.org/debian-lts-announce/2024/06/msg00017.htmlMailing List
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.