CVE-2024-26707: net: hsr: remove WARN_ONCE() in send_hsr_supervision_frame()
Vulnerability summary
CVE-2024-26707 is a medium (CVSS 5.5) vulnerability in debian debian_linux. EPSS estimates a 0.23% chance of exploitation in the next 30 days, higher than 13.3% of scored vulnerabilities.
Not severe (CVSS 5.5, local access); no exploitation reported by the 5 checked sources
Source freshness unavailable
How is this decided?Advisory lineage
Upstream 0 · Downstream 13 · Related 10Timeline
- 03-04-2024PublishedVulnerability first disclosed.
- 11-05-2026Last modifiedVulnerability information updated.
Description
In the Linux kernel, the following vulnerability has been resolved: net: hsr: remove WARN_ONCE() in send_hsr_supervision_frame() Syzkaller reported [1] hitting a warning after failing to allocate resources for skb in hsr_init_skb(). Since a WARN_ONCE() call will not help much in this case, it might be prudent to switch to netdev_warn_once(). At the very least it will suppress syzkaller reports such as [1]. Just in case, use netdev_warn_once() in send_prp_supervision_frame() for similar reasons. [1] HSR: Could not send supervision frame WARNING: CPU: 1 PID: 85 at net/hsr/hsr_device.c:294 send_hsr_supervision_frame+0x60a/0x810 net/hsr/hsr_device.c:294 RIP: 0010:send_hsr_supervision_frame+0x60a/0x810 net/hsr/hsr_device.c:294 ... Call Trace: <IRQ> hsr_announce+0x114/0x370 net/hsr/hsr_device.c:382 call_timer_fn+0x193/0x590 kernel/time/timer.c:1700 expire_timers kernel/time/timer.c:1751 [inline] __run_timers+0x764/0xb20 kernel/time/timer.c:2022 run_timer_softirq+0x58/0xd0 kernel/time/timer.c:2035 __do_softirq+0x21a/0x8de kernel/softirq.c:553 invoke_softirq kernel/softirq.c:427 [inline] __irq_exit_rcu kernel/softirq.c:632 [inline] irq_exit_rcu+0xb7/0x120 kernel/softirq.c:644 sysvec_apic_timer_interrupt+0x95/0xb0 arch/x86/kernel/apic/apic.c:1076 </IRQ> <TASK> asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:649 ... This issue is also found in older kernels (at least up to 5.10).
CVSS metrics
4 scores · 3 sources · 2 versions- OSV · UbuntuEcosystem advisory · calculated5.5MediumCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
- OSV · DebianEcosystem advisory · calculated5.5MediumCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
EPSS trend
Probability
0.23%
Chance of exploitation in the next 30 days
Percentile
13%
Versus all other CVEs
30-day change
No change 0.00 pp
From 0.23% on 04-10-2026
Known exploited
Compare KEV catalogs
CISA KEVNot in the CISA KEV catalog.
ENISA CNWNot in the ENISA CNW catalog.
CIRCLNot in the CIRCL catalog.
Public exploits
0 foundNo public exploits indexed.
Weaknesses
CWE · root causeAffected systems
Known conditions: local access, low-privilege account, no user interaction (CVSS vector). Other conditions: not stated in public data.
Ubuntu104 products
- linux< 5.15.0-106.116
- linux-allwinner-5.19All versions (No fix recorded)
- linux-aws< 5.15.0-1061.67
- linux-aws-5.0All versions (No fix recorded)
- linux-aws-5.11All versions (No fix recorded)
Debian2 products
- linux< 6.1.82-1 | < 6.7.7-1
- debian_linuxEOL10.0
Linux2 products
- linux≥ 121c33b07b3127f501b366bc23d2a590e2f2b8ef, < 0d8011a878fdf96123bc0d6a12e2fe7ced5fddfb | ≥ 121c33b07b3127f501b366bc23d2a590e2f2b8ef, < de769423b2f053182a41317c4db5a927e90622a0 | ≥ 121c33b07b3127f501b366bc23d2a590e2f2b8ef, < 56440799fc4621c279df16176f83a995d056023a | ≥ 121c33b07b3127f501b366bc23d2a590e2f2b8ef, < 923dea2a7ea9e1ef5ac4031fba461c1cc92e32b8 | ≥ 121c33b07b3127f501b366bc23d2a590e2f2b8ef, < 547545e50c913861219947ce490c68a1776b9b51 | ≥ 121c33b07b3127f501b366bc23d2a590e2f2b8ef, < 37e8c97e539015637cb920d3e6f1e404f707a06e | 5.9
- linux_kernel≥ 5.9, < 5.10.210 | ≥ 5.11, < 5.15.149 | ≥ 5.16, < 6.1.79 | ≥ 6.2, < 6.6.18 | ≥ 6.7, < 6.7.6 | 6.8:rc1 | 6.8:rc2
3 vendors · 108 products
