CVE-2024-36926
- Source
- https://nvd.nist.gov/vuln/detail/CVE-2024-36926
- Import Source
- https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2024-36926.json
- JSON Data
- https://api.test.osv.dev/v1/vulns/CVE-2024-36926
- Downstream
- Related
- Published
- 2024-05-30T15:29:19Z
- Modified
- 2025-10-09T10:56:37.668170Z
- Severity
-
- 6.2 (Medium) CVSS_V3 - CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H CVSS Calculator
- Summary
- powerpc/pseries/iommu: LPAR panics during boot up with a frozen PE
- Details
-
In the Linux kernel, the following vulnerability has been resolved:
powerpc/pseries/iommu: LPAR panics during boot up with a frozen PE
At the time of LPAR boot up, partition firmware provides Open Firmware property ibm,dma-window for the PE. This property is provided on the PCI bus the PE is attached to.
There are execptions where the partition firmware might not provide this property for the PE at the time of LPAR boot up. One of the scenario is where the firmware has frozen the PE due to some error condition. This PE is frozen for 24 hours or unless the whole system is reinitialized.
Within this time frame, if the LPAR is booted, the frozen PE will be presented to the LPAR but ibm,dma-window property could be missing.
Today, under these circumstances, the LPAR oopses with NULL pointer dereference, when configuring the PCI bus the PE is attached to.
BUG: Kernel NULL pointer dereference on read at 0x000000c8 Faulting instruction address: 0xc0000000001024c0 Oops: Kernel access of bad area, sig: 7 [#1] LE PAGESIZE=64K MMU=Radix SMP NRCPUS=2048 NUMA pSeries Modules linked in: Supported: Yes CPU: 0 PID: 1 Comm: swapper/0 Not tainted 6.4.0-150600.9-default #1 Hardware name: IBM,9043-MRX POWER10 (raw) 0x800200 0xf000006 of:IBM,FW1060.00 (NM1060023) hv:phyp pSeries NIP: c0000000001024c0 LR: c0000000001024b0 CTR: c000000000102450 REGS: c0000000037db5c0 TRAP: 0300 Not tainted (6.4.0-150600.9-default) MSR: 8000000002009033 <SF,VEC,EE,ME,IR,DR,RI,LE> CR: 28000822 XER: 00000000 CFAR: c00000000010254c DAR: 00000000000000c8 DSISR: 00080000 IRQMASK: 0 ... NIP [c0000000001024c0] pcidmabussetuppSeriesLP+0x70/0x2a0 LR [c0000000001024b0] pcidmabussetuppSeriesLP+0x60/0x2a0 Call Trace: pcidmabussetuppSeriesLP+0x60/0x2a0 (unreliable) pcibiossetupbusself+0x1c0/0x370 _ofscanbus+0x2f8/0x330 pcibiosscanphb+0x280/0x3d0 pcibiosinit+0x88/0x12c dooneinitcall+0x60/0x320 kernelinitfreeable+0x344/0x3e4 kernelinit+0x34/0x1d0 retfromkerneluser_thread+0x14/0x1c
- References
-
- https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
- https://git.kernel.org/stable/c/2bed905a72485a2b79a001bd7e66c750942d2155
- https://git.kernel.org/stable/c/49a940dbdc3107fecd5e6d3063dc07128177e058
- https://git.kernel.org/stable/c/7fb5793c53f8c024e3eae9f0d44eb659aed833c4
- https://git.kernel.org/stable/c/802b13b79ab1fef66c6852fc745cf197dca0cb15
Affected packages
Linux
Kernel
Kernel
Kernel
Kernel
Kernel
Kernel
Git
git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
Affected ranges
- Type
- GIT
- Repo
- https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
- Events
-
Introducedb1fc44eaa9ba31e28c4125d6b9205a3582b47b5dFixed7fb5793c53f8c024e3eae9f0d44eb659aed833c4
- Type
- GIT
- Repo
- https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
- Events
-
Introducedb1fc44eaa9ba31e28c4125d6b9205a3582b47b5dFixed802b13b79ab1fef66c6852fc745cf197dca0cb15
- Type
- GIT
- Repo
- https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
- Events
-
Introducedb1fc44eaa9ba31e28c4125d6b9205a3582b47b5dFixed2bed905a72485a2b79a001bd7e66c750942d2155
- Type
- GIT
- Repo
- https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
- Events
-
Introducedb1fc44eaa9ba31e28c4125d6b9205a3582b47b5dFixed49a940dbdc3107fecd5e6d3063dc07128177e058
- Type
- GIT
- Repo
- https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
- Events
-
Introducedb9f08b2649dddd4eb0698cb428b173bb01dd2fc5
- Type
- GIT
- Repo
- https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
- Events
-
Introduced58942f672c6d04b6a3cd7866cb459671df881538