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VulnerabilityPublished Updated

CVE-2026-23377: Linux kernel · ice: change XDP RxQ frag_size from DMA write length to xdp.frame_sz

Source GCVE Database

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Authoritative record:CVE-2026-23377· High

Not known to be exploited · CVSS 5.5 High · fixed in f2b29bbe355221a65c3eccf9500e5e33e4f1cb5c : patch Linux kernel soon.

Data as of 30 Oct 2026, 16:33 UTC

CVSS 3.1 base score
5.5High
How severe the flaw is on the 0–10 CVSS scale.

Thin evidence

One scorer or none
Patch
Available – fixed in f2b29bbe355221a65c3eccf9500e5e33e4f1cb5c, e142dc4ef0f451b7ef99d09aaa84e9389af629d7, b0f05100e8795aadd1c0606bae9caefbda070d63 +2
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Exploitation evidence

  1. Disclosed: evidence found.

    CVE published 25 Mar 2026

  2. Detectable: no evidence on record.

    No public nuclei template indexed

  3. Weaponized: no evidence on record.

    No public exploit code indexed in Metasploit or Exploit-DB

  4. Exploited in the wild: no evidence on record.

    Not in CISA KEV and no source reports exploitation

  5. Observed by OffSeq Mirage: no evidence on record.

    No attack traffic recorded by OffSeq Mirage sensors

A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 30 Oct 2026.

What to do

Upgrade to a fixed release listed under Affected software.

Affected software

ProductAffectedFixed in
LinuxLinuxAffected
  • ≥ 2fba7dc5157b6f85dbf1b8e26e63a724db1f3d79, < f2b29bbe355221a65c3eccf9500e5e33e4f1cb5c
Fixed in
  • f2b29bbe355221a65c3eccf9500e5e33e4f1cb5c
LinuxLinuxAffected
  • ≥ 2fba7dc5157b6f85dbf1b8e26e63a724db1f3d79, < e142dc4ef0f451b7ef99d09aaa84e9389af629d7
Fixed in
  • e142dc4ef0f451b7ef99d09aaa84e9389af629d7
LinuxLinuxAffected
  • ≥ 2fba7dc5157b6f85dbf1b8e26e63a724db1f3d79, < b0f05100e8795aadd1c0606bae9caefbda070d63
Fixed in
  • b0f05100e8795aadd1c0606bae9caefbda070d63
LinuxLinuxAffected
  • ≥ 2fba7dc5157b6f85dbf1b8e26e63a724db1f3d79, < 6aed180a44b1c0a3971107fa052a41b03acdb31e
Fixed in
  • 6aed180a44b1c0a3971107fa052a41b03acdb31e
LinuxLinuxAffected
  • ≥ 2fba7dc5157b6f85dbf1b8e26e63a724db1f3d79, < 2a2927e95cf1b8efb15bcb741bbd06c9bb0537b7
Fixed in
  • 2a2927e95cf1b8efb15bcb741bbd06c9bb0537b7
LinuxLinuxAffected
  • =6.3
Fixed in–

Description

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.

References

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