Answer in brief
CVE-2026-98489 records a Unknown severity vulnerability in net: atl1c: fix soft lockup on out-of-range tpd_cons read. The current sources do not mark it as known exploited. The current feed maps Linux/Linux (generic), Linux/Linux (generic). Check affected ranges and fixed versions before updating.
Analysis pending evidence review
HOL Guard separates source facts from reviewed analysis. See the methodology.
A CVSS score is not reported in the current record. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.
Analysis status
Analysis pending evidence review
Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.
The current feed maps Linux/Linux (generic), Linux/Linux (generic). Check affected ranges and fixed versions before updating.
| Package | Affected range | Fixed version |
|---|---|---|
| Linux/Linuxgeneric | >=43250ddd75a35d1f7926d989a10fefd30c37eaa7 <e7acd4cdeccbcdfd407adeb72b1eba14d1145b6f || >=43250ddd75a35d1f7926d989a10fefd30c37eaa7 <5ea2576a4f5ec476f33169fdbe9090d2b038ad13 || >=43250ddd75a35d1f7926d989a10fefd30c37eaa7 <4daf80da0c38b8cd92c111ad96cb38322aabf586 || >=43250ddd75a35d1f7926d989a10fefd30c37eaa7 <57b55367b6e3accc55a989afeaf127063e3614dc || >=43250ddd75a35d1f7926d989a10fefd30c37eaa7 <9f2cc71a2e2799d9c993c73f1bd36507eef6ae43 || >=43250ddd75a35d1f7926d989a10fefd30c37eaa7 <586847400b1168a88917287ac02c2c91a620b841 || >=43250ddd75a35d1f7926d989a10fefd30c37eaa7 <d4ab263e40fcf7cfa38a43ec774067d32eb94e16 || >=43250ddd75a35d1f7926d989a10fefd30c37eaa7 <36c2009d90f2210ef92e6f4f2850e8b57b09e754 | e7acd4cdeccbcdfd407adeb72b1eba14d1145b6f, 5ea2576a4f5ec476f33169fdbe9090d2b038ad13, 4daf80da0c38b8cd92c111ad96cb38322aabf586, 57b55367b6e3accc55a989afeaf127063e3614dc, 9f2cc71a2e2799d9c993c73f1bd36507eef6ae43, 586847400b1168a88917287ac02c2c91a620b841, d4ab263e40fcf7cfa38a43ec774067d32eb94e16, 36c2009d90f2210ef92e6f4f2850e8b57b09e754 |
| Linux/Linuxgeneric | 2.6.29 | Not reported |
Published upstream
Oct 18, 2026
Evidence: source:cvelist:source_dates:source-dates:recordSource modified
Oct 19, 2026
Evidence: source:cvelist:source_dates:source-dates:recordFirst seen by HOL
Oct 18, 2026
In the Linux kernel, the following vulnerability has been resolved: net: atl1c: fix soft lockup on out-of-range tpd_cons read The hardware can report an out-of-range tpd_cons (seen as 0xffff) while the PCIe link/MAC is resetting. An out-of-range value can never be reached and the loop below would spin forever. To avoid a soft lockup treat it as "nothing new to clean" instead. Reproduced on two machines, same NIC (Qualcomm Atheros AR8151 v2.0, 4-port), triggered by rebooting a Mikrotik CCR2004 PCIe card that the ports are directly linked to: - Ubuntu 26.04.1 LTS, kernel 7.0.0-31-generic. The link-flap precursor, before the lockup was captured with a full trace elsewhere: atl1c 0000:05:00.0 enp5s0f0: NETDEV WATCHDOG: CPU: 4: transmit queue 2 timed out 489984 ms atl1c 0000:05:00.0: MAC state machine can't be idle since disabled for 10ms second atl1c 0000:05:00.0: atl1c: enp5s0f0 NIC Link is Up<65535 Mbps Full Duplex> 65535 (0xffff) here is the same value tpd_cons reads back once the loop below gets stuck. - Proxmox VE, kernel 7.0.14-11-pve. Same NIC/trigger, this time caught by the soft lockup watchdog with a full stack trace: watchdog: BUG: soft lockup - CPU#12 stuck for 354s! [napi/eth%d-0:329] CPU: 12 UID: 0 PID: 329 Comm: napi/eth%d-0 Tainted: P O L 7.0.14-11-pve #1 PREEMPT(lazy) RIP: 0010:atl1c_clean_tx+0x142/0x2d0 [atl1c] Call Trace: <TASK> __napi_poll+0x32/0x1e0 napi_threaded_poll_loop+0x286/0x2e0 napi_threaded_poll+0xfd/0x140 kthread+0xf7/0x130 ret_from_fork+0x2da/0x3a0 ret_from_fork_asm+0x1a/0x30 </TASK>
Quoted source text, attributed separately from HOL analysis.