CVE-2026-23377 json
ice: change XDP RxQ frag_size from DMA write length to xdp.frame_sz
published 2026-03-25 7 mo ago modified 2026-11-05 3 d ago also EUVD-2026-15367
- cvss
- 5.5
- version 3.1, NVD
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 0.2%
- EPSS 0.2% chance of exploitation in 30 days, percentile 5%
- public exploits
- 0
- none known
Summary
In the Linux kernel, the following vulnerability has been resolved:
ice: change XDP RxQ frag_size from DMA write length to xdp.frame_sz
The only user of frag_size field in XDP RxQ info is bpf_xdp_frags_increase_tail(). It clearly expects whole buff size instead of DMA write size. Different assumptions in ice driver configuration lead to negative tailroom.
This allows to trigger kernel panic, when using XDP_ADJUST_TAIL_GROW_MULTI_BUFF xskxceiver test and changing packet size to 6912 and the requested offset to a huge value, e.g. XSK_UMEM__MAX_FRAME_SIZE * 100.
Due to other quirks of the ZC configuration in ice, panic is not observed in ZC mode, but tailroom growing still fails when it should not.
Use fill queue buffer truesize instead of DMA write size in XDP RxQ info. Fix ZC mode too by using the new helper.
Patch / fix
- Linux Linux 6.6.160, 6.12.114, 6.18.60, 6.19.7, 7.0
- linux Debian 13 6.12.115-2
- linux Debian 14 6.19.8-1
debian advisories DEBIAN-CVE-2026-23377
- git.kernel.org/stable/c/f2b29bbe355221a65c3eccf9500e5e33e4f1cb5c commit
- git.kernel.org/stable/c/6aed180a44b1c0a3971107fa052a41b03acdb31e commit
- git.kernel.org/stable/c/2a2927e95cf1b8efb15bcb741bbd06c9bb0537b7 commit
- git.kernel.org/stable/c/b0f05100e8795aadd1c0606bae9caefbda070d63 commit
- git.kernel.org/stable/c/e142dc4ef0f451b7ef99d09aaa84e9389af629d7 commit
Vendor advisories
What the vendors themselves say about their products: affected, fixed or not affected, and what to do.
red hat product security vex CVE-2026-23377 updated cvss 5.5
kernel: ice: change XDP RxQ frag_size from DMA write length to xdp.frame_sz
-
Red Hat Enterprise Linux 9 rv, perf, rtla, kernel, bpftool, libperf, +82 more Red Hat Enterprise Linux 10 kernelaffected: workaround, no fix available “To mitigate this issue, prevent the ice module from being loaded. See https://access.redhat.com/solutions/41278 for instructions.”
-
Red Hat Enterprise Linux 6 perf, kernel, python-perf, kernel-kdump, kernel-firmware, kernel-bootwrapper, +1 more Red Hat Enterprise Linux 7 perf, kernel, bpftool, kernel-rt, python-perf, kernel-kdump, +8 more Red Hat Enterprise Linux 8 perf, kernel, bpftool, kernel-rt, kernel-core, kernel-tools, +29 more Red Hat Enterprise Linux 9 kernel-rt, kernel-rt-selftests-internalnot affected: vulnerable code not present
Red Hat CSAF VEX © Red Hat, Inc., from https://security.access.redhat.com/data/csaf/v2/vex/; changed: reduced to product statuses and remediations. CC BY 4.0 · csaf
CISA SSVC
- Exploitation
- none
- Automatable
- no
- Technical impact
- partial
- Assessed
- 3 d ago
Exploit prediction
0.16% chance of exploitation in the next 30 days, higher than 5% of all scored CVEs (FIRST EPSS, 2026-11-08).
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| NVD | 3.1 | 5.5 | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H |
Affected products
- Linux Linux
Classification
- Technology feeds
References
- git.kernel.org /stable/c/f2b29bbe355221a65c3eccf9500e5e33e4f1cb5c
- git.kernel.org /stable/c/6aed180a44b1c0a3971107fa052a41b03acdb31e
- git.kernel.org /stable/c/2a2927e95cf1b8efb15bcb741bbd06c9bb0537b7
-
git.kernel.org
/stable/c/b0f05100e8795aadd1c0606bae9caefbda070d63
patch
-
git.kernel.org
/stable/c/e142dc4ef0f451b7ef99d09aaa84e9389af629d7
patch
Sources
- CVE List CVE-2026-23377
- NVD CVE-2026-23377
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