powerpc/rtas: avoid device tree lookups in rtas_os_term() (Linux Linux)
At a glance
- Source
- NVD
- EPSS
- EPSS 0.21 % · percentile 11 ()
- State
- PUBLISHED
- Published
- Updated
- Assigner
- Linux
- NVD status
- Deferred
Description
In the Linux kernel, the following vulnerability has been resolved: powerpc/rtas: avoid device tree lookups in rtas_os_term() rtas_os_term() is called during panic. Its behavior depends on a couple of conditions in the /rtas node of the device tree, the traversal of which entails locking and local IRQ state changes. If the kernel panics while devtree_lock is held, rtas_os_term() as currently written could hang. Instead of discovering the relevant characteristics at panic time, cache them in file-static variables at boot. Note the lookup for "ibm,extended-os-term" is converted to of_property_read_bool() since it is a boolean property, not an RTAS function token. [mpe: Incorporate suggested change from Nick]
References
- https://git.kernel.org/stable/c/e23822c7381c59d9e42e65771b6e17c71ed30ea7
- https://git.kernel.org/stable/c/06a07fbb32b3a23eec20a42b1e64474da0a3b33e
- https://git.kernel.org/stable/c/c2fa91abf22a705cf02f886cd99cff41f4ceda60
- https://git.kernel.org/stable/c/f2167f10fcca68ab9ae3f8d94d2c704c5541ac69
- https://git.kernel.org/stable/c/d8939315b7342860df143afe0adda6212cdd3193
- https://git.kernel.org/stable/c/698e682c849e356fb47a8be47ca8baa817cf31e0
- https://git.kernel.org/stable/c/464d10e8d797454e16a173ef1292a446b2adf21c
- https://git.kernel.org/stable/c/ed2213bfb192ab51f09f12e9b49b5d482c6493f3
European references
- ENISA EUVD · EUVD-2022-55828
- GCVE · GCVE-0-2022-50870
CERT-FR advisories
- CERTFR-2026-AVI-0225 — Multiples vulnérabilités dans le noyau Linux de SUSE · cert.ssi.gouv.fr
- CERTFR-2026-AVI-0170 — Multiples vulnérabilités dans le noyau Linux de SUSE · cert.ssi.gouv.fr
- CERTFR-2026-AVI-0128 — Multiples vulnérabilités dans le noyau Linux de SUSE · cert.ssi.gouv.fr
- CERTFR-2026-AVI-0108 — Multiples vulnérabilités dans le noyau Linux de SUSE · cert.ssi.gouv.fr
Affected products
| Product | Versions |
|---|---|
| Linux · Linux | affected 088186ded490ced80758200cf8f906ed741df306 < e23822c7381c59d9e42e65771b6e17c71ed30ea7 ; affected 088186ded490ced80758200cf8f906ed741df306 < 06a07fbb32b3a23eec20a42b1e64474da0a3b33e ; affected 088186ded490ced80758200cf8f906ed741df306 < c2fa91abf22a705cf02f886cd99cff41f4ceda60 ; affected 088186ded490ced80758200cf8f906ed741df306 < f2167f10fcca68ab9ae3f8d94d2c704c5541ac69 ; affected 088186ded490ced80758200cf8f906ed741df306 < d8939315b7342860df143afe0adda6212cdd3193 ; affected 088186ded490ced80758200cf8f906ed741df306 < 698e682c849e356fb47a8be47ca8baa817cf31e0 |
| Linux · Linux | affected 2.6.16 ; unaffected 0 < 2.6.16 ; unaffected 4.14.303 ≤ 4.14.* ; unaffected 4.19.270 ≤ 4.19.* ; unaffected 5.4.229 ≤ 5.4.* ; unaffected 5.10.163 ≤ 5.10.* |
Sources
| Source | Licence |
|---|---|
| CVE List (CVEProject cvelistV5) | CVE Program Terms of Use |
| EPSS (FIRST.org) | FIRST — attribution requested |
| ENISA EUVD | ENISA — reproduction authorised, source acknowledged |
| CERT-FR (ANSSI) | Licence Ouverte / Etalab 2.0 |
| NVD (NIST) via fkie-cad/nvd-json-data-feeds | Public domain — this product uses data from the NVD API but is not endorsed or certified by the NVD |