Vulnerability Details : CVE-2020-7053
In the Linux kernel 4.14 longterm through 4.14.165 and 4.19 longterm through 4.19.96 (and 5.x before 5.2), there is a use-after-free (write) in the i915_ppgtt_close function in drivers/gpu/drm/i915/i915_gem_gtt.c, aka CID-7dc40713618c. This is related to i915_gem_context_destroy_ioctl in drivers/gpu/drm/i915/i915_gem_context.c.
Vulnerability category: Memory Corruption
Products affected by CVE-2020-7053
- cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
- cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
- cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
Exploit prediction scoring system (EPSS) score for CVE-2020-7053
0.02%
Probability of exploitation activity in the next 30 days
EPSS Score History
~ 3 %
Percentile, the proportion of vulnerabilities that are scored at or less
CVSS scores for CVE-2020-7053
Base Score | Base Severity | CVSS Vector | Exploitability Score | Impact Score | Score Source | First Seen |
---|---|---|---|---|---|---|
4.6
|
MEDIUM | AV:L/AC:L/Au:N/C:P/I:P/A:P |
3.9
|
6.4
|
NIST | |
7.8
|
HIGH | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H |
1.8
|
5.9
|
NIST |
CWE ids for CVE-2020-7053
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The product reuses or references memory after it has been freed. At some point afterward, the memory may be allocated again and saved in another pointer, while the original pointer references a location somewhere within the new allocation. Any operations using the original pointer are no longer valid because the memory "belongs" to the code that operates on the new pointer.Assigned by: nvd@nist.gov (Primary)
References for CVE-2020-7053
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https://lore.kernel.org/stable/20200114183937.12224-1-tyhicks@canonical.com
[PATCH] drm/i915: Fix use-after-free when destroying GEM context - Tyler HicksPatch;Third Party Advisory
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https://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.2
Third Party Advisory
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https://usn.ubuntu.com/4255-2/
USN-4255-2: Linux kernel (HWE) vulnerabilities | Ubuntu security notices
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https://usn.ubuntu.com/4255-1/
USN-4255-1: Linux kernel vulnerabilities | Ubuntu security notices
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https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=7dc40713618c884bf07c030d1ab1f47a9dc1f310
kernel/git/torvalds/linux.git - Linux kernel source treePatch;Third Party Advisory
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https://usn.ubuntu.com/4287-2/
USN-4287-2: Linux kernel (Azure) vulnerabilities | Ubuntu security notices
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https://usn.ubuntu.com/4285-1/
USN-4285-1: Linux kernel vulnerabilities | Ubuntu security notices
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https://security.netapp.com/advisory/ntap-20200204-0002/
January 2020 Linux Kernel Vulnerabilities in NetApp Products | NetApp Product Security
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https://usn.ubuntu.com/4287-1/
USN-4287-1: Linux kernel vulnerabilities | Ubuntu security notices
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https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1859522
Bug #1859522 “use-after-free in i915_ppgtt_close” : Bugs : linux package : UbuntuThird Party Advisory
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http://lists.opensuse.org/opensuse-security-announce/2020-03/msg00021.html
[security-announce] openSUSE-SU-2020:0336-1: important: Security update
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http://packetstormsecurity.com/files/156455/Kernel-Live-Patch-Security-Notice-LSN-0063-1.html
Kernel Live Patch Security Notice LSN-0063-1 ≈ Packet Storm
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