CVE-2026-98576

nfc: llcp: fix slab-out-of-bounds reads when logging service names

State: Published
Severity: Not scored
Published: Oct 18, 2026
Updated: Oct 19, 2026
Reserved: Sep 25, 2026

Description

In the Linux kernel, the following vulnerability has been resolved:

nfc: llcp: fix slab-out-of-bounds reads when logging service names

nfc_llcp_wks_sap() and nfc_llcp_build_sdreq_tlv() pass non-null- terminated strings to pr_debug() using the %s format specifier. The buffers are allocated via kmemdup() or come from netlink attributes and are not guaranteed to be null-terminated, causing __dynamic_pr_debug() to read beyond the allocated region:

KASAN: slab-out-of-bounds Read in __dynamic_pr_debug

Fix both call sites by using %.*s with the explicit length to limit the output to the actual length of the string.

Scores

The record has no CVSS score.

Weaknesses

The record names no weakness.

Affected Products

Product	Versions
LinuxLinux	d9b8d8e19b073096d3609bbd60f82148d128b555 to before 75f7c5a42fa1483f5912279a749417c284ad708fAffected d9b8d8e19b073096d3609bbd60f82148d128b555 to before 6d4ca872830e46fcca9c086bf19fa9bd2faf09d2Affected d9b8d8e19b073096d3609bbd60f82148d128b555 to before a143f7835faa4fe0178448289feea4f84eeee8d6Affected d9b8d8e19b073096d3609bbd60f82148d128b555 to before 75bfd9ef4da2fb49dac1f19880d2ac4ccd07b45bAffected d9b8d8e19b073096d3609bbd60f82148d128b555 to before 8afb6c194f5781798d3ab3edf243cf5a24a9d1f9Affected d9b8d8e19b073096d3609bbd60f82148d128b555 to before 8978dff632519712d1fa432991e1f2e857f90239Affected d9b8d8e19b073096d3609bbd60f82148d128b555 to before 4262b12277a3e056c95fc49e9c4d7bd97035d16cAffected d9b8d8e19b073096d3609bbd60f82148d128b555 to before 7dcf371a35632f035baf77bcf2c129165f772ce4Affected
LinuxLinux	3.10Affected before 3.10Not affected 5.10.271 through 5.10.Not affected 5.15.222 through 5.15.Not affected 6.1.189 through 6.1.Not affected 6.6.158 through 6.6.Not affected 6.12.112 through 6.12.Not affected 6.18.55 through 6.18.Not affected 7.2.9 through 7.2.*Not affected 7.3 and laterNot affected

Product

Versions

LinuxLinux

d9b8d8e19b073096d3609bbd60f82148d128b555 to before 75f7c5a42fa1483f5912279a749417c284ad708fAffected
d9b8d8e19b073096d3609bbd60f82148d128b555 to before 6d4ca872830e46fcca9c086bf19fa9bd2faf09d2Affected
d9b8d8e19b073096d3609bbd60f82148d128b555 to before a143f7835faa4fe0178448289feea4f84eeee8d6Affected
d9b8d8e19b073096d3609bbd60f82148d128b555 to before 75bfd9ef4da2fb49dac1f19880d2ac4ccd07b45bAffected
d9b8d8e19b073096d3609bbd60f82148d128b555 to before 8afb6c194f5781798d3ab3edf243cf5a24a9d1f9Affected
d9b8d8e19b073096d3609bbd60f82148d128b555 to before 8978dff632519712d1fa432991e1f2e857f90239Affected
d9b8d8e19b073096d3609bbd60f82148d128b555 to before 4262b12277a3e056c95fc49e9c4d7bd97035d16cAffected
d9b8d8e19b073096d3609bbd60f82148d128b555 to before 7dcf371a35632f035baf77bcf2c129165f772ce4Affected

LinuxLinux

3.10Affected
before 3.10Not affected
5.10.271 through 5.10.*Not affected
5.15.222 through 5.15.*Not affected
6.1.189 through 6.1.*Not affected
6.6.158 through 6.6.*Not affected
6.12.112 through 6.12.*Not affected
6.18.55 through 6.18.*Not affected
7.2.9 through 7.2.*Not affected
7.3 and laterNot affected

References

Every record here comes from the CVE Program’s CVE List. © 1999–2026 The MITRE Corporation. CVE is a registered trademark of The MITRE Corporation. The records are reproduced under the CVE Program terms of use.