CVE-2025-21799net: ethernet: ti: am65-cpsw: fix freeing IRQ in am65_cpsw_nuss_remove_tx_chns()
- 5.5MediumCVSS base score
- 0.23%Exploitation in 30 daysEPSS · top 86% 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: net: ethernet: ti: am65-cpsw: fix freeing IRQ in am65_cpsw_nuss_remove_tx_chns() When getting the IRQ we use k3_udma_glue_tx_get_irq() which returns negative error value on error. So not NULL check is not sufficient to deteremine if IRQ is valid. Check that IRQ is greater then zero to ensure it is valid. There is no issue at probe time but at runtime user can invoke .set_channels which results in the following call chain. am65_cpsw_set_channels() am65_cpsw_nuss_update_tx_rx_chns() am65_cpsw_nuss_remove_tx_chns() am65_cpsw_nuss_init_tx_chns() At this point if am65_cpsw_nuss_init_tx_chns() fails due to k3_udma_glue_tx_get_irq() then tx_chn->irq will be set to a negative value. Then, at subsequent .set_channels with higher channel count we will attempt to free an invalid IRQ in am65_cpsw_nuss_remove_tx_chns() leading to a kernel warning. The issue is present in the original commit that introduced this driver, although there, am65_cpsw_nuss_update_tx_rx_chns() existed as am65_cpsw_nuss_update_tx_chns().
Timeline
ID reserved
By Linux
- 2 months later
· 2 months later
Published
- 15 months later
· 15 months 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
| Scored by | CVSS | Score | Vector |
|---|---|---|---|
| NVDNVD · Modified | 3.1 | Medium5.5 | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H |
- EPSS (exploitation in 30 days)
- 0.23% · top 86% of all CVEs (14 Nov 2026)
The list uses the assigner's score when there is one, then CISA's, then NVD's: Medium 5.5.
Affected products
- affected 93a76530316a3d8cc2d82c3deca48424fee92100 – < 321990fdf4f1bb64e818c7140688bf33d129e48d
- affected 93a76530316a3d8cc2d82c3deca48424fee92100 – < ed8c0300f302338c36edb06bca99051e5be6fb2f
- affected 93a76530316a3d8cc2d82c3deca48424fee92100 – < aea5cca681d268f794fa2385f9ec26a5cce025cd
- affected 93a76530316a3d8cc2d82c3deca48424fee92100 – < 88fd5db8c0073bd91d18391feb5741aeb0a2b475
- affected 93a76530316a3d8cc2d82c3deca48424fee92100 – < 8448c87b3af68bebca21e3136913f7f77e363515
- affected 93a76530316a3d8cc2d82c3deca48424fee92100 – < 8aae91ae1c65782a169ec070e023d4d269e5d6e6
- affected 93a76530316a3d8cc2d82c3deca48424fee92100 – < 4395a44acb15850e492dd1de9ec4b6479d96bc80
- affected 5.7
- unaffected < 5.7
- unaffected 5.10.235 – ≤ 5.10.*
- unaffected 5.15.179 – ≤ 5.15.*
- unaffected 6.1.129 – ≤ 6.1.*
- unaffected 6.6.76 – ≤ 6.6.*
- unaffected 6.12.13 – ≤ 6.12.*
- unaffected 6.13.2 – ≤ 6.13.*
- unaffected 6.14 – ≤ *
References
References9
- https://git.kernel.org/stable/c/321990fdf4f1bb64e818c7140688bf33d129e48d (opens in a new tab)
- https://git.kernel.org/stable/c/ed8c0300f302338c36edb06bca99051e5be6fb2f (opens in a new tab)
- https://git.kernel.org/stable/c/aea5cca681d268f794fa2385f9ec26a5cce025cd (opens in a new tab)
- https://git.kernel.org/stable/c/88fd5db8c0073bd91d18391feb5741aeb0a2b475 (opens in a new tab)
- https://git.kernel.org/stable/c/8448c87b3af68bebca21e3136913f7f77e363515 (opens in a new tab)
- https://git.kernel.org/stable/c/8aae91ae1c65782a169ec070e023d4d269e5d6e6 (opens in a new tab)
- https://git.kernel.org/stable/c/4395a44acb15850e492dd1de9ec4b6479d96bc80 (opens in a new tab)
- https://lists.debian.org/debian-lts-announce/2025/05/msg00030.html (opens in a new tab)
- https://lists.debian.org/debian-lts-announce/2025/03/msg00028.html (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-2025-5990 (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)
Badge for a README or a ticket
[](https://cveledger.app/cve/CVE-2025-21799)Record last updated .