CVE-2025-39911: debian debian_linux
Vulnerability summary
CVE-2025-39911 is a high (CVSS 7.8) vulnerability in debian debian_linux. EPSS estimates a 0.16% chance of exploitation in the next 30 days, higher than 4.4% of scored vulnerabilities.
Advisory lineage
Upstream 0 · Downstream 44 · Related 40Timeline
- 01-10-2025PublishedVulnerability first disclosed.
- 11-06-2026Last modifiedVulnerability information updated.
Description
In the Linux kernel, the following vulnerability has been resolved: i40e: fix IRQ freeing in i40e_vsi_request_irq_msix error path If request_irq() in i40e_vsi_request_irq_msix() fails in an iteration later than the first, the error path wants to free the IRQs requested so far. However, it uses the wrong dev_id argument for free_irq(), so it does not free the IRQs correctly and instead triggers the warning: Trying to free already-free IRQ 173 WARNING: CPU: 25 PID: 1091 at kernel/irq/manage.c:1829 __free_irq+0x192/0x2c0 Modules linked in: i40e(+) [...] CPU: 25 UID: 0 PID: 1091 Comm: NetworkManager Not tainted 6.17.0-rc1+ #1 PREEMPT(lazy) Hardware name: [...] RIP: 0010:__free_irq+0x192/0x2c0 [...] Call Trace: <TASK> free_irq+0x32/0x70 i40e_vsi_request_irq_msix.cold+0x63/0x8b [i40e] i40e_vsi_request_irq+0x79/0x80 [i40e] i40e_vsi_open+0x21f/0x2f0 [i40e] i40e_open+0x63/0x130 [i40e] __dev_open+0xfc/0x210 __dev_change_flags+0x1fc/0x240 netif_change_flags+0x27/0x70 do_setlink.isra.0+0x341/0xc70 rtnl_newlink+0x468/0x860 rtnetlink_rcv_msg+0x375/0x450 netlink_rcv_skb+0x5c/0x110 netlink_unicast+0x288/0x3c0 netlink_sendmsg+0x20d/0x430 ____sys_sendmsg+0x3a2/0x3d0 ___sys_sendmsg+0x99/0xe0 __sys_sendmsg+0x8a/0xf0 do_syscall_64+0x82/0x2c0 entry_SYSCALL_64_after_hwframe+0x76/0x7e [...] </TASK> ---[ end trace 0000000000000000 ]--- Use the same dev_id for free_irq() as for request_irq(). I tested this with inserting code to fail intentionally.
CVSS metrics
3 scores · 3 sources · 1 version- OSV · UbuntuEcosystem advisory · calculated7.8HighCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
- OSV · DebianEcosystem advisory · calculated7.8HighCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
EPSS trend
Probability
0.16%
Chance of exploitation in the next 30 days
Percentile
4%
Versus all other CVEs
30-day change
0.00 pp
From 0.16% on 19-09-2026
Known exploited
Compare KEV catalogsNot in any of the 3 tracked catalogs.
Public exploits
0 foundNo public exploits indexed.
Weaknesses
CWE · root causeNo weakness data has been published for this record.
Affected systems
Ubuntu148 products
- linuxAll versions (No fix recorded) | < 5.15.0-170.180 | < 6.8.0-106.106
- linux-allwinner-5.19All versions (No fix recorded)
- linux-awsAll versions (No fix recorded) | < 5.15.0-1100.107 | < 6.8.0-1050.53
- linux-aws-5.0All versions (No fix recorded)
- linux-aws-5.11All versions (No fix recorded)
Debian2 products
- linux< 6.1.153-1 | < 6.12.48-1 | < 6.16.8-1
- debian_linuxEOL11.0
Linux2 products
- linux≥ 493fb30011b3ab5173cef96f1d1ce126da051792, < 13ab9adef3cd386511c930a9660ae06595007f89 | ≥ 493fb30011b3ab5173cef96f1d1ce126da051792, < 6e4016c0dca53afc71e3b99e24252b63417395df | ≥ 493fb30011b3ab5173cef96f1d1ce126da051792, < b9721a023df38cf44a88f2739b4cf51efd051f85 | ≥ 493fb30011b3ab5173cef96f1d1ce126da051792, < b905b2acb3a0bbb08ad9be9984d8cdabdf827315 | ≥ 493fb30011b3ab5173cef96f1d1ce126da051792, < 23431998a37764c464737b855c71a81d50992e98 | ≥ 493fb30011b3ab5173cef96f1d1ce126da051792, < a30afd6617c30aaa338d1dbcb1e34e7a1890085c | ≥ 493fb30011b3ab5173cef96f1d1ce126da051792, < c62580674ce5feb1be4f90b5873ff3ce50e0a1db | ≥ 493fb30011b3ab5173cef96f1d1ce126da051792, < 915470e1b44e71d1dd07ee067276f003c3521ee3 | 3.13
- linux_kernel≥ 3.13, < 5.4.300 | ≥ 5.5, < 5.10.245 | ≥ 5.11, < 5.15.194 | ≥ 5.16, < 6.1.153 | ≥ 6.2, < 6.6.107 | ≥ 6.7, < 6.12.48 | ≥ 6.13, < 6.16.8 | 6.17:rc1 | 6.17:rc2 | 6.17:rc3 | 6.17:rc4 | 6.17:rc5
3 vendors · 152 products
References
38 links- lists.debian.org/debian-lts-announce/2025/10/msg00008.htmlThird Party Advisory