CVE-2026-98561

nfp: hold IPsec RX state under the XArray lock

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:

nfp: hold IPsec RX state under the XArray lock

nfp_net_ipsec_rx() drops the XArray lock before taking a reference to the xfrm_state it found. The delete path can erase the entry and drop the last state reference in that interval. RX can then try to increment a zero refcount after the state has been queued for destruction.

The driver queues firmware invalidation asynchronously; the delete path does not wait for the command to complete or drain pending RX processing.

The XFRM garbage collector waits for an RCU grace period before freeing the state. That delays reclamation but does not make acquiring a reference from zero valid.

Take the xfrm_state reference before releasing the XArray lock so xa_erase() cannot run between lookup and reference acquisition.

Scores

The record has no CVSS score.

Weaknesses

The record names no weakness.

Affected Products

Product	Versions
LinuxLinux	57f273adbcd44172cbe0bd10b8b7408dd255699f to before c1b1639fb138db52fcfbd1747e92f2454076c6d5Affected 57f273adbcd44172cbe0bd10b8b7408dd255699f to before dd765023bb54f9650f8b9137906fb2c4a554dd1dAffected 57f273adbcd44172cbe0bd10b8b7408dd255699f to before 8468d05aa08dc430b5675beadf6f6fb8943f170bAffected 57f273adbcd44172cbe0bd10b8b7408dd255699f to before fe6c8ea8bfd5d1253bb0de682b1fcc2c4bb92488Affected 57f273adbcd44172cbe0bd10b8b7408dd255699f to before 1a983a4e14c635c40354be110cd9a1a5c94e01e6Affected
LinuxLinux	6.2Affected before 6.2Not 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

57f273adbcd44172cbe0bd10b8b7408dd255699f to before c1b1639fb138db52fcfbd1747e92f2454076c6d5Affected
57f273adbcd44172cbe0bd10b8b7408dd255699f to before dd765023bb54f9650f8b9137906fb2c4a554dd1dAffected
57f273adbcd44172cbe0bd10b8b7408dd255699f to before 8468d05aa08dc430b5675beadf6f6fb8943f170bAffected
57f273adbcd44172cbe0bd10b8b7408dd255699f to before fe6c8ea8bfd5d1253bb0de682b1fcc2c4bb92488Affected
57f273adbcd44172cbe0bd10b8b7408dd255699f to before 1a983a4e14c635c40354be110cd9a1a5c94e01e6Affected

LinuxLinux

6.2Affected
before 6.2Not 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

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