kernel: use-after-free in sound/core/timer.c
Published Dec 15, 2019
7.8
HIGHCVSS 3.1
EPSS 0.55%
Description
In the Linux kernel before 5.3.11, sound/core/timer.c has a use-after-free caused by erroneous code refactoring, aka CID-e7af6307a8a5. This is related to snd_timer_open and snd_timer_close_locked. The timeri variable was originally intended to be for a newly created timer instance, but was used for a different purpose after refactoring.
Affected products
No data.
Configuration 1
- ≥ 4.9.199 · < 4.9.201
- ≥ 4.14.152 · < 4.14.154
- ≥ 4.19.82 · < 4.19.84
- ≥ 5.2 · < 5.3.11
Configuration 2
- 14.04
- 16.04
- 18.04
- 19.10
No data.
Red Hat Enterprise Linux 7
kernel-0:3.10.0-1160.el7
Fixed · RHSA-2020:4060
Red Hat Enterprise Linux 7
kernel-rt-0:3.10.0-1160.rt56.1131.el7
Fixed · RHSA-2020:4062
Red Hat Enterprise Linux 8
kernel-0:4.18.0-193.13.2.el8_2
Fixed · RHSA-2020:3010
Red Hat Enterprise Linux 8
kernel-rt-0:4.18.0-193.13.2.rt13.65.el8_2
Fixed · RHSA-2020:3016
Red Hat Enterprise Linux 8.1 Extended Update Support
kernel-0:4.18.0-147.24.2.el8_1
Fixed · RHSA-2020:3222
Red Hat Enterprise Linux 5
kernel
Not affected
Red Hat Enterprise Linux 6
kernel
Not affected
Red Hat Enterprise Linux 7
kernel-alt
Not affected
Red Hat Enterprise MRG 2
kernel-rt
Not affected
| Product | Package | State | Advisory |
|---|---|---|---|
| Red Hat Enterprise Linux 7 | kernel-0:3.10.0-1160.el7 | Fixed | RHSA-2020:4060 |
| Red Hat Enterprise Linux 7 | kernel-rt-0:3.10.0-1160.rt56.1131.el7 | Fixed | RHSA-2020:4062 |
| Red Hat Enterprise Linux 8 | kernel-0:4.18.0-193.13.2.el8_2 | Fixed | RHSA-2020:3010 |
| Red Hat Enterprise Linux 8 | kernel-rt-0:4.18.0-193.13.2.rt13.65.el8_2 | Fixed | RHSA-2020:3016 |
| Red Hat Enterprise Linux 8.1 Extended Update Support | kernel-0:4.18.0-147.24.2.el8_1 | Fixed | RHSA-2020:3222 |
| Red Hat Enterprise Linux 5 | kernel | Not affected | n/a |
| Red Hat Enterprise Linux 6 | kernel | Not affected | n/a |
| Red Hat Enterprise Linux 7 | kernel-alt | Not affected | n/a |
| Red Hat Enterprise MRG 2 | kernel-rt | Not affected | n/a |
No package ranges for this CVE.
Remediation
Red Hat statement
This issue affected Linux kernel versions as shipped with Red Hat Enterprise Linux 8 starting with RHEL-8.1.0, that is Red Hat Enterprise Linux 8.1 GA kernel version.
Red Hat mitigation
Red Hat has investigated whether a possible mitigation exists for this issue, and has not been able to identify a practical example. Please update as soon as possible.
References (11)
- https://access.redhat.com/security/cve/CVE-2019-19807 Vendor Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=1786078 Issue Tracking
- https://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.3.11 x_refsource_MISCRelease NotesVendor Advisory
- https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=e7af6307a8a54f0b873960b32b6a644f2d0fbd97 x_refsource_MISCExploitPatchVendor Advisory
- https://github.com/torvalds/linux/commit/e7af6307a8a54f0b873960b32b6a644f2d0fbd97 x_refsource_MISCPatchThird Party Advisory
- https://nvd.nist.gov/vuln/detail/CVE-2019-19807
- https://security.netapp.com/advisory/ntap-20200103-0001/ x_refsource_CONFIRMThird Party Advisory
- https://usn.ubuntu.com/4225-1/ vendor-advisoryx_refsource_UBUNTUThird Party Advisory
- https://usn.ubuntu.com/4227-1/ vendor-advisoryx_refsource_UBUNTUThird Party Advisory
- https://usn.ubuntu.com/4227-2/ vendor-advisoryx_refsource_UBUNTUThird Party Advisory
- https://www.cve.org/CVERecord?id=CVE-2019-19807
| Link | Providers | Tags |
|---|---|---|
| https://access.redhat.com/security/cve/CVE-2019-19807 | Vendor Advisory | |
| https://bugzilla.redhat.com/show_bug.cgi?id=1786078 | Issue Tracking | |
| https://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.3.11 | x_refsource_MISCRelease NotesVendor Advisory | |
| https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=e7af6307a8a54f0b873960b32b6a644f2d0fbd97 | x_refsource_MISCExploitPatchVendor Advisory | |
| https://github.com/torvalds/linux/commit/e7af6307a8a54f0b873960b32b6a644f2d0fbd97 | x_refsource_MISCPatchThird Party Advisory | |
| https://nvd.nist.gov/vuln/detail/CVE-2019-19807 | ||
| https://security.netapp.com/advisory/ntap-20200103-0001/ | x_refsource_CONFIRMThird Party Advisory | |
| https://usn.ubuntu.com/4225-1/ | vendor-advisoryx_refsource_UBUNTUThird Party Advisory | |
| https://usn.ubuntu.com/4227-1/ | vendor-advisoryx_refsource_UBUNTUThird Party Advisory | |
| https://usn.ubuntu.com/4227-2/ | vendor-advisoryx_refsource_UBUNTUThird Party Advisory | |
| https://www.cve.org/CVERecord?id=CVE-2019-19807 |
Change history (0)
No recorded changes yet.