CVE-2022-50870
powerpc/rtas: avoid device tree lookups in rtas_os_term()
- Published
- Updated
- Reserved
- Assigned by
- Linux
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]
Scores
No CVSS score yet: neither the CNA, CISA nor NVD has scored this CVE. NVD status: Deferred.
- EPSS (exploitation in 30 days)
- 0.21% · top 89% of all CVEs (6 Nov 2026)
The list uses the assigner's score when there is one, then CISA's, then NVD's: Not scored.
Affected products
- affected 088186ded490ced80758200cf8f906ed741df306 – < e23822c7381c59d9e42e65771b6e17c71ed30ea7
- affected 088186ded490ced80758200cf8f906ed741df306 – < 06a07fbb32b3a23eec20a42b1e64474da0a3b33e
- affected 088186ded490ced80758200cf8f906ed741df306 – < c2fa91abf22a705cf02f886cd99cff41f4ceda60
- affected 088186ded490ced80758200cf8f906ed741df306 – < f2167f10fcca68ab9ae3f8d94d2c704c5541ac69
- affected 088186ded490ced80758200cf8f906ed741df306 – < d8939315b7342860df143afe0adda6212cdd3193
- affected 088186ded490ced80758200cf8f906ed741df306 – < 698e682c849e356fb47a8be47ca8baa817cf31e0
- affected 088186ded490ced80758200cf8f906ed741df306 – < 464d10e8d797454e16a173ef1292a446b2adf21c
- affected 088186ded490ced80758200cf8f906ed741df306 – < ed2213bfb192ab51f09f12e9b49b5d482c6493f3
- affected 2.6.16
- unaffected < 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.*
- unaffected 5.15.87 – ≤ 5.15.*
- unaffected 6.0.17 – ≤ 6.0.*
- unaffected 6.1.3 – ≤ 6.1.*
- unaffected 6.2 – ≤ *
References (8)
- https://git.kernel.org/stable/c/e23822c7381c59d9e42e65771b6e17c71ed30ea7 (opens in a new tab)
- https://git.kernel.org/stable/c/06a07fbb32b3a23eec20a42b1e64474da0a3b33e (opens in a new tab)
- https://git.kernel.org/stable/c/c2fa91abf22a705cf02f886cd99cff41f4ceda60 (opens in a new tab)
- https://git.kernel.org/stable/c/f2167f10fcca68ab9ae3f8d94d2c704c5541ac69 (opens in a new tab)
- https://git.kernel.org/stable/c/d8939315b7342860df143afe0adda6212cdd3193 (opens in a new tab)
- https://git.kernel.org/stable/c/698e682c849e356fb47a8be47ca8baa817cf31e0 (opens in a new tab)
- https://git.kernel.org/stable/c/464d10e8d797454e16a173ef1292a446b2adf21c (opens in a new tab)
- https://git.kernel.org/stable/c/ed2213bfb192ab51f09f12e9b49b5d482c6493f3 (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)
- 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://trackcve.app/cve/CVE-2022-50870)Record last updated .