CVE-2026-53363
Severity CVSS v4.0:
Pending analysis
Type:
Unavailable / Other
Publication date:
10/07/2026
Last modified:
22/07/2026
Description
In the Linux kernel, the following vulnerability has been resolved:<br />
<br />
xfrm: iptfs: preserve shared-frag marker in iptfs_consume_frags()<br />
<br />
iptfs_consume_frags() transfers paged fragments from one socket buffer<br />
to another but fails to propagate the SKBFL_SHARED_FRAG flag. This is<br />
the same class of bug that was fixed in skb_try_coalesce() for<br />
CVE-2026-46300: when fragments backed by read-only page-cache pages are<br />
merged, the marker indicating their shared nature must be preserved so<br />
that ESP can decide correctly whether in-place encryption is safe.<br />
<br />
Apply the same two-line fix used in skb_try_coalesce() to<br />
iptfs_consume_frags().
Impact
Base Score 3.x
9.80
Severity 3.x
CRITICAL
Vulnerable products and versions
| CPE | From | Up to |
|---|---|---|
| cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* | 6.14 (including) | 6.18.36 (excluding) |
| cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* | 6.19 (including) | 7.0.13 (excluding) |
| cpe:2.3:o:linux:linux_kernel:7.1:rc1:*:*:*:*:*:* | ||
| cpe:2.3:o:linux:linux_kernel:7.1:rc2:*:*:*:*:*:* | ||
| cpe:2.3:o:linux:linux_kernel:7.1:rc3:*:*:*:*:*:* | ||
| cpe:2.3:o:linux:linux_kernel:7.1:rc4:*:*:*:*:*:* | ||
| cpe:2.3:o:linux:linux_kernel:7.1:rc5:*:*:*:*:*:* | ||
| cpe:2.3:o:linux:linux_kernel:7.1:rc6:*:*:*:*:*:* | ||
| cpe:2.3:o:linux:linux_kernel:7.1:rc7:*:*:*:*:*:* |
To consult the complete list of CPE names with products and versions, see this page