CVE-2026-23377
ice: change XDP RxQ frag_size from DMA write length to xdp.frame_sz
Reported by linux · Published March 25, 2026
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.
EPSS 0.16% · 5.3th percentile
Fixed versions
Upgrade to a fixed version or later. Language registries are listed first, then Linux distributions, then vendor products.
| Package | Ecosystem | Fixed in |
|---|---|---|
| linux-gcp-6.18 | Chainguard | 6.18.38-r2 |
| linux_kernel | linux | 6.19.7 |
| Linux | Linux | e142dc4ef0f451b7ef99d09aaa84e9389af629d7, b0f05100e8795aadd1c0606bae9caefbda070d63, 6.3 |
Risk scores
Affected products
| Vendor | Product | Versions |
|---|---|---|
| Linux | Linux | 2fba7dc5157b6f85dbf1b8e26e63a724db1f3d79, 2fba7dc5157b6f85dbf1b8e26e63a724db1f3d79, 2fba7dc5157b6f85dbf1b8e26e63a724db1f3d79 |
| Linux | Linux | 6.3, 0, 6.6.160 |
| chainguard | linux-gcp-6.18 | *, 0 |
| Linux | Linux | 7.0, 2fba7dc5157b6f85dbf1b8e26e63a724db1f3d79, 2fba7dc5157b6f85dbf1b8e26e63a724db1f3d79 |
| chainguard | linux-qemu-6.18 | 0, * |
| linux | linux_kernel | 6.3, 6.3, 6.3 |
| chainguard | linux-qemu-melange | 0 |
Timeline
- Mar 24, 2026 CVE Published
- Mar 25, 2026 EPSS Score (21 in total, the first dated here)
- Mar 25, 2026 Coalition ESS Score (2 in total, the first dated here)
- Mar 29, 2026 Security Advisory (65 in total, the first dated here)
- Aug 11, 2026 Distribution Patch (59 in total, the first dated here)
- Oct 30, 2026 CVE Updated
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