CVE-2026-98967
cxgb4/ch_ktls: disable softirqs around tid_list erases
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Description
In the Linux kernel, the following vulnerability has been resolved: cxgb4/ch_ktls: disable softirqs around tid_list erases chcr_ktls_cpl_act_open_rpl() inserts into tid_list from the receive path using xa_insert_bh(). The array is shared by the adapter's connections and initialized with XA_FLAGS_LOCK_BH. However, chcr_ktls_dev_del() and the chcr_ktls_dev_add() error path use xa_erase(), which takes the XArray lock without disabling softirqs. When cleanup runs with softirqs enabled, a receive softirq for another connection on the same CPU can interrupt the erase and spin on the lock held by the interrupted task. Use xa_erase_bh() at both sites to match the insertion path.
Affected products and packages
CNA (CVE.org)
| Vendor | Product | Versions |
|---|---|---|
| Linux | Linux | affected: 65e302a9bd57b62872040d57eea1201562a7cbb2 … < 8739f06e3f82cd715f7dd10ab24029ed881efc90 affected: 65e302a9bd57b62872040d57eea1201562a7cbb2 … < bcf97573d44e277b1744d7f1226f665aa0ccc599 affected: 65e302a9bd57b62872040d57eea1201562a7cbb2 … < 7110c7f70c59eb7924e79853bcc00e2a026662e6 affected: 65e302a9bd57b62872040d57eea1201562a7cbb2 … < bea736a2b8c6da5b1078badf1206541b5404250f affected: 65e302a9bd57b62872040d57eea1201562a7cbb2 … < 4c9dc0faca98084922caeb689579d338cf3e1c29 affected: b96adbf6601d76ee0bdd9bfa5bcdd0cdd5333d78 affected: 70c4ead897211b184f36cbeda213f2a3e8153218 affected: 5.10.42 … < 5.11 affected: 5.12.9 … < 5.13 default: unaffected |
| Linux | Linux | affected: 5.13 unaffected: 0 … < 5.13 unaffected: 6.6.160 … <= 6.6.* unaffected: 6.12.113 … <= 6.12.* unaffected: 6.18.57 … <= 6.18.* unaffected: 7.2.11 … <= 7.2.* unaffected: 7.3 … <= * default: affected |
Open-source packages (GitHub Advisory / OSV)
cxgb4/ch_ktls: disable softirqs around tid_list erases
| Ecosystem | Package | Affected versions | Fixed in |
|---|---|---|---|
| >= 65e302a9bd57b62872040d57eea1201562a7cbb2, < 8739f06e3f82cd715f7dd10ab24029ed881efc90; < bcf97573d44e277b1744d7f1226f665aa0ccc599; < 7110c7f70c59eb7924e79853bcc00e2a026662e6; < bea736a2b8c6da5b1078badf1206541b5404250f; < 4c9dc0faca98084922caeb689579d338cf3e1c29; >= 5.10.42, < 5.11; >= 5.12.9, < 5.13; >= b96adbf6601d76ee0bdd9bfa5bcdd0cdd5333d78; >= 70c4ead897211b184f36cbeda213f2a3e8153218 v5.10.272, v5.10.271, v5.10.270, v5.10.269, v5.10.268, v5.10.267, v5.10.266, v5.10.265, v5.10.264, v5.10.263, v5.10.262, v5.10.261, v5.10.260, v5.10.259, v5.10.258, v5.10.257, v5.10.256, v5.10.255, v5.10.254, v5.10.253, … (+222) | 8739f06e3f82cd715f7dd10ab24029ed881efc90, bcf97573d44e277b1744d7f1226f665aa0ccc599, 7110c7f70c59eb7924e79853bcc00e2a026662e6, bea736a2b8c6da5b1078badf1206541b5404250f, 4c9dc0faca98084922caeb689579d338cf3e1c29, 5.11, 5.13 | ||
| Linux | Kernel | >= 5.13.0, < 6.6.160; >= 6.7.0, < 6.12.113; >= 6.13.0, < 6.18.57; >= 6.19.0, < 7.2.11 | 6.6.160, 6.12.113, 6.18.57, 7.2.11 |
Linux distribution status
References (8)
- https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git OSV
- https://git.kernel.org/stable/c/4c9dc0faca98084922caeb689579d338cf3e1c29 NVD, CNA, OSV
- https://git.kernel.org/stable/c/7110c7f70c59eb7924e79853bcc00e2a026662e6 NVD, CNA, OSV
- https://git.kernel.org/stable/c/8739f06e3f82cd715f7dd10ab24029ed881efc90 NVD, CNA, OSV
- https://git.kernel.org/stable/c/bcf97573d44e277b1744d7f1226f665aa0ccc599 NVD, CNA, OSV
- https://git.kernel.org/stable/c/bea736a2b8c6da5b1078badf1206541b5404250f NVD, CNA, OSV
- https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/98xxx/CVE-2026-98967.json OSV
- https://nvd.nist.gov/vuln/detail/CVE-2026-98967 OSV