Bug 1161520 (CVE-2019-19053)

Summary: VUL-0: CVE-2019-19053: kernel-source: memory leak in the rpmsg_eptdev_write_iter() function in drivers/rpmsg/rpmsg_char.c
Product: [Novell Products] SUSE Security Incidents Reporter: Alexandros Toptsoglou <atoptsoglou>
Component: IncidentsAssignee: Security Team bot <security-team>
Status: RESOLVED FIXED QA Contact: Security Team bot <security-team>
Severity: Major    
Priority: P5 - None CC: smash_bz, tiwai
Version: unspecified   
Target Milestone: ---   
Hardware: Other   
OS: Other   
URL: https://smash.suse.de/issue/247491/
Whiteboard:
Found By: Security Response Team Services Priority:
Business Priority: Blocker: ---
Marketing QA Status: --- IT Deployment: ---

Description Alexandros Toptsoglou 2020-01-22 10:25:15 UTC
CVE-2019-19053

A memory leak in the rpmsg_eptdev_write_iter() function in drivers/rpmsg/rpmsg_char.c in the Linux kernel through 5.3.11 allows attackers to cause a denial of service (memory consumption) by triggering copy_from_iter_full() failures
 
Upstream commit:

https://github.com/torvalds/linux/commit/bbe692e349e2a1edf3fe0a29a0e05899c9c94d51

References:
https://bugzilla.redhat.com/show_bug.cgi?id=1775056
http://web.nvd.nist.gov/view/vuln/detail?vulnId=CVE-2019-19053
http://people.canonical.com/~ubuntu-security/cve/2019/CVE-2019-19053.html
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2019-19053
https://github.com/torvalds/linux/commit/bbe692e349e2a1edf3fe0a29a0e05899c9c94d51
https://security.netapp.com/advisory/ntap-20191205-0001/
Comment 1 Takashi Iwai 2020-01-22 11:53:20 UTC
The fix is needed only after the code change to iter read/write, commit
ccf45b18ce89f598c69a0c945ced1635013fc0b1
    rpmsg: char: Migrate to iter versions of read and write
which was 4.20-rc1.

So only SLE15-SP2 needs the fix, and it was backported.

Reassigned back to security team.
Comment 2 Alexandros Toptsoglou 2020-01-22 12:14:34 UTC
Done