CVE-2020-27815
Aliases:UBUNTU-CVE-2020-27815DEBIAN-CVE-2020-27815CGA-27f2-wpf9-frr9CGA-27r9-356q-j97jCGA-27vm-w97h-g9ppCGA-2crr-m7q6-r6mrCGA-2vpw-vh9x-p88gCGA-2ww5-rcrp-58x5CGA-359q-864f-3qphCGA-3649-gm99-6wv7CGA-369h-58gf-gmj3CGA-375q-m293-q33jCGA-3784-mx8x-pjvwCGA-3qpm-wpp3-rmgrCGA-3r74-q26x-6662CGA-3vq6-x4g3-3vr4CGA-3xrj-2ccr-8689CGA-448c-2q75-9gr3CGA-44pc-75gx-ww65CGA-4524-7xfg-78mrCGA-4c52-5529-28vgCGA-4f76-wxm8-chgcCGA-4j49-66xw-wxxjCGA-4m5v-pgcx-f4xmCGA-4q2g-hmgv-4qrjCGA-4r3m-hvvj-7cqvCGA-4vhr-w8jc-r39rCGA-5hj2-wcx7-hjgmCGA-66pr-qr75-rxj8CGA-69v4-p4f3-3r2gCGA-6gq3-cf46-6hw8CGA-6h7j-24v6-mphrCGA-6j48-qjw9-94w4CGA-6mcv-xrh8-h2j8CGA-6mx5-rj4g-3fc5CGA-6pw7-8646-38qjCGA-6q5w-wxrf-4m76CGA-6xmm-rpwv-2r77CGA-732v-8prw-hwxjCGA-746h-27c8-gvrcCGA-772f-pxw6-5979CGA-78hq-px2h-cphrCGA-7948-8652-mp6cCGA-7cx5-ccx8-w3rfCGA-7v5r-pf5g-8hm6CGA-7wx3-3f7v-jc9cCGA-8ggr-r9g3-8vxrCGA-8pw7-66xh-prr7CGA-8rmr-gr8q-3vwvCGA-8rrv-9cpr-768fCGA-97rx-7rhg-x77pCGA-99j2-47m2-hgpcCGA-9p89-9h98-rr3rCGA-c4m8-4723-rcqgCGA-c4wv-vpp6-3jrrCGA-c895-4phr-vmxfCGA-c8xh-2gqx-wr8cCGA-cj3g-4xf6-m69rCGA-f82c-f6g9-cm7mCGA-fpcr-8fm3-7j3pCGA-fqgw-cjgq-8rw2CGA-fvm2-qv3h-g544CGA-g4h4-7mxv-22fvCGA-ghhv-6rfg-jgqhCGA-gmjq-v6xp-9693CGA-h2jw-jr7r-j75hCGA-h3jp-925m-wf7vCGA-h74v-7fcx-rx55CGA-h8q5-h5gv-26p8CGA-hq3g-vqh6-9h69CGA-j59p-33qc-4h5vCGA-j8gx-pgm6-jxfjCGA-jwj9-wvhv-g4g3CGA-m5cf-m63g-vx7qCGA-m8hc-92x5-8r94CGA-mhr2-g8gx-7h2hCGA-mvj9-9gp5-vh59CGA-mw3w-v3gq-92chCGA-pww7-pqp5-rfqrCGA-q548-46x9-2wchCGA-q649-3v77-fp22CGA-q8pj-74pp-x4xjCGA-q8v4-722c-h5cwCGA-q9v3-m7xx-rpxwCGA-qf8w-2rj9-4w47CGA-qrgj-96cm-q438CGA-qwp4-jwvx-cwh7CGA-r2j6-xc8j-rwv3CGA-r3rf-qh8w-3g54CGA-r4r6-2v8g-4frpCGA-r555-q7m3-6vv3CGA-r9pw-q687-q9jhCGA-rf8x-vf6m-j5v2CGA-rfg3-r72c-249gCGA-rgvm-3ww9-wx8fCGA-rv22-cmp7-f4qqCGA-rw83-mmjj-q863CGA-v4h6-4f6j-mvrfCGA-v8p5-vvrp-4f8qCGA-vgjh-5cfp-24p2CGA-vh9w-38g4-cxqjCGA-vv89-vxh2-6qr3CGA-vvx5-fpv9-7cjpCGA-vxx3-9vw4-q8cqCGA-w49f-8xc2-2pc6CGA-whh4-cmr8-44w2CGA-whrj-hmrc-v546CGA-wvj5-f588-fxr8CGA-x2mm-gv77-r744CGA-x465-4ppc-gf2vCGA-x4qp-vm3f-34pqCGA-x5vv-p5cw-cp95CGA-x6xv-r2pq-8cppCGA-xcf5-5c8h-hvr8CGA-xvpj-c68f-xh2cCGA-xwwf-qw68-v999CGA-76j8-29w2-rq37CGA-rhr6-j46f-v22xCGA-2m54-f6jm-94j8CGA-45hm-vfwq-7r3rCGA-4vff-5hmm-r9jmCGA-74jx-cq3w-f3hwCGA-8m37-jwpg-m9h9CGA-8q38-2wjp-hwv5CGA-9hv7-4mf9-jmm9CGA-c6hj-qjxc-jq67CGA-h45w-qhj7-4gxwCGA-hhc6-m9xv-h82xCGA-jwxc-gpmv-pv5xCGA-mcjj-hh4c-g36wCGA-pwqc-7wm3-m4pfCGA-vgwx-57gq-262gCGA-xp29-v6c5-mg63CGA-8f35-fhv2-25vvCGA-9h5g-9q6f-4gfqCGA-9r98-52vq-9475CGA-pvf8-qx73-mx3vCGA-r5fp-mx78-5hfvCGA-47cp-xp2h-v7qrCGA-7q57-4m6j-q346CGA-hjmw-j4fh-95r2
Advisory lineage Upstream: 0 Downstream: 26
Modified
Published: 26 May 2021, 12:18
Last modified:04 Aug 2024, 16:25
Vulnerability Summary
Overall Risk (default)
medium
41/100 CVSS Score
7.8 HIGH
v3.1 (nvd)
EPSS Score
0.79% LOW
1% probability +0.61%
KEV
Not listed
Ransomware
No reports
Public exploits
2 found
Dark Web
Not detected
Timeline
26 May 2021, 12:18
Published
Vulnerability first disclosed
04 Aug 2024, 16:25
Last Modified
Vulnerability information updated
Description
A flaw was found in the JFS filesystem code in the Linux Kernel which allows a local attacker with the ability to set extended attributes to panic the system, causing memory corruption or escalating privileges. The highest threat from this vulnerability is to confidentiality, integrity, as well as system availability.
CVSS Metrics
- v3.1•HIGH•Score: 7.8CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
- v2.0•MEDIUM•Score: 6.1AV:L/AC:L/Au:N/C:P/I:P/A:C
EPSS Trends
Current EPSS score: 0.79%• Percentile: 55%
Techniques & Countermeasures
- CWE-119•Improper Restriction of Operations within the Bounds of a Memory Buffer
The product performs operations on a memory buffer, but it reads from or writes to a memory location outside the buffer's intended boundary. This may result in read or write operations on unexpected memory locations that could be linked to other variables, data structures, or internal program data.
- CWE-787•Out-of-bounds Write
The product writes data past the end, or before the beginning, of the intended buffer.
Affected Systems
- chainguard•hyperv-daemons-6.18
< 0
- chainguard•hyperv-daemons-generic
< 0
- chainguard•linux-aws-6.12
< 0 | < 6.12.65-r0
- chainguard•linux-aws-6.12-boot-installed
< 0
- chainguard•linux-aws-6.12-fips-boot-installed
< 0
- chainguard•linux-aws-6.12-headers
< 0
- chainguard•linux-aws-6.12-modules
< 0
- chainguard•linux-aws-6.18
< 6.18.10-r0 | < 0
- chainguard•linux-aws-6.18-boot-installed
< 0
- chainguard•linux-aws-6.18-fips-boot-installed
< 0
- chainguard•linux-aws-6.18-headers
< 0
- chainguard•linux-aws-6.18-modules
< 0
- chainguard•linux-aws-generic
< 0 | < 6.18.5-r0
- chainguard•linux-aws-generic-boot-installed
< 0
- chainguard•linux-aws-generic-fips-boot-installed
< 0
- chainguard•linux-aws-generic-headers
< 0
- chainguard•linux-aws-generic-modules
< 0
- chainguard•linux-azure-6.12
< 6.12.65-r1 | < 0
- chainguard•linux-azure-6.18
< 0
- chainguard•linux-azure-6.18-boot-installed
< 0
- chainguard•linux-azure-6.18-fips-boot-installed
< 0
- chainguard•linux-azure-6.18-headers
< 0
- chainguard•linux-azure-6.18-modules
< 0
- chainguard•linux-azure-generic
< 6.18.5-r0 | < 0
- chainguard•linux-azure-generic-boot-installed
< 0
- chainguard•linux-azure-generic-fips-boot-installed
< 0
- chainguard•linux-azure-generic-headers
< 0
- chainguard•linux-azure-generic-modules
< 0
- chainguard•linux-desktop-6.18
all
- chainguard•linux-desktop-6.18-bootc
all
- chainguard•linux-desktop-6.18-bootc-boot-installed
all
- chainguard•linux-desktop-6.18-headers
all
- chainguard•linux-desktop-6.18-modules
all
- chainguard•linux-desktop-7.2
all
- chainguard•linux-desktop-7.2-bootc
all
- chainguard•linux-desktop-7.2-modules
all
- chainguard•linux-firecracker-6.18
all
- chainguard•linux-gcp-6.12
< 0 | < 6.12.65-r0
- chainguard•linux-gcp-6.18
< 6.18.10-r0 | < 0
- chainguard•linux-gcp-6.18-boot-installed
< 0
- chainguard•linux-gcp-6.18-fips-boot-installed
< 0
- chainguard•linux-gcp-6.18-headers
< 0
- chainguard•linux-gcp-6.18-modules
< 0
- chainguard•linux-gcp-generic
< 6.18.5-r0 | < 0
- chainguard•linux-gcp-generic-boot-installed
< 0
- chainguard•linux-gcp-generic-fips-boot-installed
< 0
- chainguard•linux-gcp-generic-headers
< 0
- chainguard•linux-gcp-generic-modules
< 0
- chainguard•linux-qemu-6.12
< 6.12.71-r0
- chainguard•linux-qemu-6.18
< 6.18.10-r0
Showing first 50 affected entries in server-rendered view.
References (19)
- http://www.openwall.com/lists/oss-security/2020/11/30/5
- http://www.openwall.com/lists/oss-security/2020/12/28/1
- https://www.debian.org/security/2021/dsa-4843
- https://lists.debian.org/debian-lts-announce/2021/02/msg00018.html
- https://lists.debian.org/debian-lts-announce/2021/03/msg00010.html
- https://bugzilla.redhat.com/show_bug.cgi?id=1897668%2C
- https://www.openwall.com/lists/oss-security/2020/11/30/5%2C
- https://www.openwall.com/lists/oss-security/2020/12/28/1%2C
- https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=c61b3e4839007668360ed8b87d7da96d2e59fc6c
- https://security.netapp.com/advisory/ntap-20210702-0004/
- https://ubuntu.com/security/CVE-2020-27815
- https://www.openwall.com/lists/oss-security/2020/11/30/5
- https://ubuntu.com/security/notices/USN-4748-1
- https://ubuntu.com/security/notices/USN-4749-1
- https://ubuntu.com/security/notices/USN-4750-1
- https://ubuntu.com/security/notices/USN-4751-1
- https://ubuntu.com/security/notices/USN-4752-1
- https://www.cve.org/CVERecord?id=CVE-2020-27815
- https://security-tracker.debian.org/tracker/CVE-2020-27815