CVE-2026-97530scsi: qla2xxx: Fix soft lockup polling continuation IOCB signature
- —Not scoredno CVSS score yet
- 0.21%Exploitation in 30 daysEPSS · top 88% of all CVEs
- NoKnown exploitednot in CISA's KEV catalog
- NonePublic exploitsnone known yet
Description
In the Linux kernel, the following vulnerability has been resolved: scsi: qla2xxx: Fix soft lockup polling continuation IOCB signature qla27xx_copy_multiple_pkt() and qla27xx_copy_fpin_pkt() poll rsp_q->ring_ptr->signature for RESPONSE_PROCESSED (0xDEADDEAD) to decide whether the next continuation IOCB has arrived, spinning on cpu_relax() without advancing the ring or decrementing the entry count while it has not. response_t::signature lives at byte offset 60, but a continuation IOCB (sts_cont_entry_t / struct sts_cont_entry_ext) carries raw FC frame payload at that offset (data[56..59]). A received frame whose payload bytes happen to equal 0xDEADDEAD is therefore misread as "not yet arrived", and the loop spins forever in interrupt/DPC context, causing a CPU soft lockup. The poll is also unnecessary: callers of qla27xx_copy_multiple_pkt() (PT_LS4_UNSOL and the NVMe purls path) already gate on qla_chk_cont_iocb_avail(), which guarantees all entry_count IOCBs are present before copying begins. The sibling helper __qla_copy_purex_to_buffer() already drops the signature poll and relies on the entry_type == STATUS_CONT_TYPE guard instead. Remove the signature busy-wait from both helpers, keeping the entry_type guard, and gate the FPIN path with qla_chk_cont_iocb_avail() so it defers and re-processes on the next interrupt once all continuation IOCBs have arrived, mirroring the ELS_AUTH_ELS and PT_LS4_UNSOL arms. With this the signature field is never read on a continuation IOCB, eliminating the payload-aliasing lockup.
Timeline
ID reserved
By Linux
- 1 day later
· 1 day later
Published
- 35 days later
· 35 days later
Record updated
Changes after publication (a new score, a public exploit, EPSS crossing 1, 10 or 50 %, leaving KEV) are kept since November 2026; earlier ones are not known.
Scores
No CVSS score yet: neither the CNA, CISA nor NVD has scored this CVE. NVD status: Received.
- EPSS (exploitation in 30 days)
- 0.21% · top 88% of all CVEs (12 Nov 2026)
The list uses the assigner's score when there is one, then CISA's, then NVD's: Not scored.
Affected products
- affected 9f2475fe7406b8ef5f97099c4980021344872d9f – < bded2de273c5b0e50e3e23de937260436cd67df2
- affected 9f2475fe7406b8ef5f97099c4980021344872d9f – < 70df7f03499046da0d28a58ec8b237ed5dfbd0a7
- affected 9f2475fe7406b8ef5f97099c4980021344872d9f – < 428e244dd4066abd40ca1ec525b7aab9a9db8296
- affected 9f2475fe7406b8ef5f97099c4980021344872d9f – < 3e58eb888ebf265af937f636d05997c60d2f197c
- affected 9f2475fe7406b8ef5f97099c4980021344872d9f – < 6e6c2ba9022eb8f9b062c81bdc6fd24c7b4c4c16
- affected 9f2475fe7406b8ef5f97099c4980021344872d9f – < 6aa722fca9d2aa1f64094101587f8f4a2f83f6aa
- affected 9f2475fe7406b8ef5f97099c4980021344872d9f – < d7e3fa7d06bf7fcaac186d3c4d635caac166d36c
- affected 5.9
- unaffected < 5.9
- unaffected 5.15.224 – ≤ 5.15.*
- unaffected 6.1.191 – ≤ 6.1.*
- unaffected 6.6.160 – ≤ 6.6.*
- unaffected 6.12.112 – ≤ 6.12.*
- unaffected 6.18.53 – ≤ 6.18.*
- unaffected 7.2.7 – ≤ 7.2.*
- unaffected 7.3 – ≤ *
References
References7
- https://git.kernel.org/stable/c/bded2de273c5b0e50e3e23de937260436cd67df2 (opens in a new tab)
- https://git.kernel.org/stable/c/70df7f03499046da0d28a58ec8b237ed5dfbd0a7 (opens in a new tab)
- https://git.kernel.org/stable/c/428e244dd4066abd40ca1ec525b7aab9a9db8296 (opens in a new tab)
- https://git.kernel.org/stable/c/3e58eb888ebf265af937f636d05997c60d2f197c (opens in a new tab)
- https://git.kernel.org/stable/c/6e6c2ba9022eb8f9b062c81bdc6fd24c7b4c4c16 (opens in a new tab)
- https://git.kernel.org/stable/c/6aa722fca9d2aa1f64094101587f8f4a2f83f6aa (opens in a new tab)
- https://git.kernel.org/stable/c/d7e3fa7d06bf7fcaac186d3c4d635caac166d36c (opens in a new tab)
Sources
The same CVE in the primary databases and aggregators, to check against.
- CVE.org record (opens in a new tab)
- CVE List JSON (GitHub) (opens in a new tab)
- NVD (opens in a new tab)
- FIRST EPSS (opens in a new tab)
- EUVD EUVD-2026-86838 (opens in a new tab)
- OSV.dev (opens in a new tab)
- GitHub Advisories (opens in a new tab)
- CIRCL Vulnerability-Lookup (opens in a new tab)
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[](https://cveledger.app/cve/CVE-2026-97530)Record last updated .