CVE-2026-23377: Linux kernel · ice: change XDP RxQ frag_size from DMA write length to xdp.frame_sz
Source GCVE Database
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
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:HExploitation evidence
Disclosed: evidence found.
CVE published 25 Mar 2026
Detectable: no evidence on record.
No public nuclei template indexed
Weaponized: no evidence on record.
No public exploit code indexed in Metasploit or Exploit-DB
Exploited in the wildExploited: no evidence on record.
Not in CISA KEV and no source reports exploitation
Observed by OffSeq MirageSeen by 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
| Product | Affected | Fixed in |
|---|---|---|
| LinuxLinux | Affected
| Fixed in
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| LinuxLinux | Affected
| Fixed in
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| LinuxLinux | Affected
| Fixed in
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| LinuxLinux | Affected
| Fixed in
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| LinuxLinux | Affected
| Fixed in
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| LinuxLinux | Affected
| 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
- nvd.nist.gov/vuln/detail/CVE-2026-23377 (opens in a new tab)
- git.kernel.org/stable/c/2a2927e95cf1b8efb15bcb741bbd06c9bb0537b7 (opens in a new tab)
- git.kernel.org/stable/c/6aed180a44b1c0a3971107fa052a41b03acdb31e (opens in a new tab)
- git.kernel.org/stable/c/b0f05100e8795aadd1c0606bae9caefbda070d63 (opens in a new tab)
- git.kernel.org/stable/c/e142dc4ef0f451b7ef99d09aaa84e9389af629d7 (opens in a new tab)
- git.kernel.org/stable/c/f2b29bbe355221a65c3eccf9500e5e33e4f1cb5c (opens in a new tab)